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Sunstones at The Lawrence

Discovery Store Unboxed Coupon Sheet

Download this flyer Print this flyer Join us for The Discovery Store Unboxed! Stop by the Discovery Store from June 29–July…

Children playing on the DNA sculpture at the Lawrence

Community Engagement and Outreach Educator

The Outreach Educator works with learners of all ages (but primarily elementary-aged kids), making science fun with hands-on experiences and programs designed by The Lawrence Hall of Science, UC Berkeley’s only public science center. In addition to facilitating learning, this position also cares for the accessibility and safety of the learning spaces.

Inside view of the Planetarium with Lawrence staff and visitors. A large planet is shown on the dome.

Exhibits & Activities

Explore, discover, and invent in our exhibits & activities!

A teen volunteer helps a young child at an exhibit

Become a Member

Tap into a world of discovery at The Lawrence. Your membership is a gateway to hands-on science learning—and a gigaton of fun.

Two students wear the astronaut helmets they have created during Summer Camp.

Camps & Classes

The Lawrence offers a range of camps and classes. We encourage you to explore our offerings and choose from a great selection of topics!

A teacher and two students work together during a science lab experiment. They are wearing gloves and safety glasses.

Partner with Us

We collaborate with a range of partners to innovate in science education. Together, we go further.

Three adults collaborate together.

Professional Learning

We offer outstanding inquiry-based science and mathematics professional development options that exemplify sound teaching strategies and are researched to address the needs of all learners.

Students participate in a Science Festival activity at their school

School Programs

The Lawrence provides a range of school program options! Visit us to connect with science, technology, engineering, and math.

Two children and a staff member are working together during a science activity.

Residential Staff Bios

For Teen Research Programs 2024 Myra Fisun  Myroslava Fisun graduated from Albany High School and is really excited to be…

A child uses a hand lens to observe nature in the Outdoor Nature Lab

Flipping Through Nature: Card Decks to Guide Outdoor Exploration

Flipping Through Nature: Card Decks to Guide Outdoor Exploration (Flip Cards) are designed to be used by learners without the support of facilitation or interpretation by an educator. These activities invite learners to take an active role in their own outdoor explorations, support them in developing their own personal relationships with the outdoors, and encourage the development of skills that can be used across many outdoor settings.

Craig and Miyuki tidepooling

Working Towards Racial Equity

The Working Towards Racial Equity workshop series, a three-year workshop series co-designed and co-facilitated by The Lawrence Hall of Science, Justice Outside, and Laura Rodriguez, is designed to build capacity to institutionalize equity in outdoor and environmental science education (including organizations dedicated to outdoor learning, environmental justice, environmental science, environmental literacy, youth development, and community development).

The Lawrence Hall of Science

Understanding the Impact of Outdoor Science and Environmental Learning Experiences Through Community-Driven Outcomes

Understanding the Impact of Outdoor Science and Environmental Learning Experiences Through Community-Driven Outcomes seeks to design new research and evaluation tools for outdoor science and environmental learning organizations to understand impact related to environmental and scientific literacy.

A student is using a hand lens to examine nature

BEETLES

BEETLES infuses outdoor science organizations with research-based approaches and tools to improve science teaching and learning. Professional learning resources, designed for use with educators, provide experiences and rationale about outdoor science instruction designed to inspire instructors to improve their teaching. Student activities inspire students’ wonder and curiosity about the natural world, support their innate tendencies for exploration, and guide them to make explanations based on evidence.

Children playing on Pheena the Whale

Supporting Rightful Presence in Museum Spaces: Youth as Participatory Designers of Indigenous Mixed Reality Science Exhibits

Supporting Rightful Presence in Museum Spaces: Youth as Participatory Designers of Indigenous Mixed Reality Science Exhibits is a collaboration between The Lawrence, UC Berkeley’s School of Information, and ‘ottoy initative to research and develop new museum experiences centered around Ohlone ways of knowing and being. The project will engage Ohlone youth and families in participatory design with the goal of instilling a sense of ownership and belonging for Indigenous visitors to the museum. The project’s deliverables will include multiple exhibits for the Lawrence Hall of Science’s science center.

Cafe Ohlone co-founders Vincent Medina and Louis Trevino with a tribal elder at a Lawrence Hall of Science event

 ‘ottoy Initiative

The Center for Environmental Learning is a partner of the The Lawrence Hall of Science’s ‘ottoy initiative. The ‘ottoy initiative aims to foster understanding of and respect for Ohlone people and culture and to repair and improve our relationship with the Ohlone community. Vincent Medina and Louis Trevino, co-founders of mak-‘amham/Cafe Ohlone, lead the initiative.

Network for Network Leaders Group Photo

Network for Network Leaders

Applications are now open!

The Center for Environmental Learning is proud to partner with Justice Outside in Network for Network Leaders: Justice, Community, & Outdoor Learning. This “backbone network” brings together leaders of networks that impact the outdoors, environmental education, and environmental justice fields to strengthen their knowledge and capacity about anti-racism, equity, and justice within the context of the outdoors; and accelerate their capacity to design their network activities with justice and equity principles at the forefront.

Students in front of The Lawrence

Assistant Manager

The Assistant Manager supervises the daily operations of the Visitor Services Desk and the Discovery Store. They write daily staff schedules, manage staff workflow, inspire and assist all staff in selling products, creating a welcoming environment, ensuring visitor satisfaction, and resolving any customer service issues that arise.

The Outdoor Nature Lab at The Lawrence

Outdoor Nature Lab

The Robert and Elizabeth Karplus Outdoor Nature Lab is the first new addition to The Lawrence in 20 years! Nestled next to the building and overlooking a stunning view of San Francisco Bay, this nature center is a native landscape attracting birds, pollinators, decomposers, and insects. Signage features Chochenyo, the first language of the East Bay and knowledge from the Ohlone community. Experiences, instructional materials, and outdoor exhibits encourage wonder, curiosity, and connection with the outdoors.

A child looks through a telescope.

Share NSELA & NSTA Presentations with Your Community

Download this flyer Print this flyer The Lawrence at NSTA Denver24 Are you headed to Denver for the 2024 National…

A child and an adult work together on a science project at an exhibit at The Lawrence.

Share Artificial Intelligence Program with Your Community

Download this flyer Print this flyer Artificial Intelligence Program FREE 5-Day Program, July 8-12, 2024 Dive into the fascinating world…

Two young people explore an exhibit at The Lawrence.

Big Give 2024

Big Give 2024 is over but we’re still accepting donations for need-based scholarships at The Lawrence. Donate Now. BIG GIVE…

Two students light up a light bulb during a science project.

Full Option Science System (FOSS®) 

The FOSS (Full Option Science System) project offers a variety of professional learning opportunities for FOSS users. Upcoming events are listed on the FOSS Professional Learning calendar. Please email foss@berkeley.edu with any questions.

A woman waves at her colleagues during a video call on her laptop

The Amplify Science Instructional Leaders Community of Practice

The Amplify Science Instructional Leaders Community of Practice (ILCP) is a place for Amplify Science instructional coaches and science coordinators from districts across the country to connect with each other through zero-cost and primarily virtual events.

Two children at an exhibit at The Lawrence.

Share Teen Research Programs With Your Community

Download this flyer Print this flyer Teen Research ProgramsThe Lawrence’s Teen Research Programs offer an in-depth research experience in cutting-edge…

A young person is building a structure at The Lawrence.

Berkeley Artificial Intelligence Research Lab

Entering Grades 10 – 12 Berkeley Artificial Intelligence Research Lab (BAIR) High School Summer Program Week of July 8-12, 20249:00…

Sunstones at The Lawrence

Planetarium Activities for Successful Shows (PASS)

In each PASS planetarium show, visitors participate in observations, experiments, and discussion in order to experience science as exciting, understandable, and to leave with feelings of accomplishment.

A teen intern at the Lawrence Hall of Science works with a student during summer camp in the Outdoor Nature Lab

Teen Internship 2024

Are you passionate about science? Do you enjoy working with youth? For over 50 years, The Lawrence Hall of Science…

Students are climbing the DNA Structure at The Lawrence

Practicum Academy to Improve Science Education (PRACTISE)

Argumentation is one of the most complex science practices both for students to learn and for teachers to learn to teach, yet it is a high-leverage practice that cuts across all content areas and builds students’ critical thinking skills. The PRACTISE project developed and researched an effective model of professional learning to support the development of teachers’ pedagogical skills to teach scientific argumentation.

A group of teachers meet together during a professional learning session

Improving Practice Together

Welcome to Improving Practice Together – Resources for elementary science argumentation through professional learning, teacher leadership, and research. The IPT project was a six-year research practice partnership to build the capacity of teachers to teach scientific argumentation by developing sustainable teacher leadership.

Children playing on the DNA sculpture at the Lawrence

Share IPT With Your Community

Download this flyer Print this flyer Improving Practice TogetherResources for Embedding Argumentation into Elementary School Science Lessons Share this flyer…

Two children and a staff member are working together during a science activity.

Share With Your Community

Download this flyer Print this flyer PDF en Español Special discount days, free community admission programs, and open holidays allow…

A linkage created in the Linkage Lab workshop

Linkage Lab

Grades 3-5 & 6-8 Overview Students are introduced to engineering as they explore the role of force and motion in…

A student builds a mechanical linkage during the Linkages and Moving Toys workshop

Linkages and Moving Toys

Grades 1-2 Overview Students engage in problem-solving as they explore linkages in this hands-on engineering design activity. They design and…

Students participate in the Engineering with Hydraulics workshop and build a hydraulic contraption

Engineering w/Hydraulics

Grades 3-5 & 6-8 Overview Students are introduced to engineering and properties of fluids as they envision and build a…

A student constructs an invention during the Make It Move workshop

Make it Move

Grades 1-2 Overview Students engage in problem solving as they make inventions using simple hydraulic systems. They think like engineers…

A student places a ball on a ramp

Motion Commotion

Grades TK/K Overview Students explore the ups and downs of force and motion through playful investigations with balls and creative…

Close up of gloved hands dissecting squid

Squid: The Inside Story

Grades 3-5 & 6-8 Overview How do squid swim? Catch prey? Eat? Reproduce? Is ink a means to escape predators?…

A child wearing safety goggles is conducting a science experiment using dry ice.

Dry Ice Investigations

Grades 3-5 & 6-8 Overview “Why does it do that? What would happen if…?” Dry ice inspires students to create…

A circuit science activity

Circuit Solutions

Grades 3-5 & 6-8 Overview There’s a heat wave, and the cooling fans of Hot Town Elementary School aren’t working…

A student holds up her slime during a slime engineering activity

Slime

Grades 1-2 Overview Is slime a solid, a liquid, or something in between? Students consider the differences between these states…

DIY Solar System icon

DIY Solar System

DIY Solar System makes it easy for families and educators to explore the solar system from anywhere, anytime! The app…

The Lawrence Hall of Science

Privacy Policy for DIY Solar System

This Privacy Policy describes the information collected by Lawrence Hall of Science (“we,” “us” or “our”) through our mobile application…

Making Music Exhibit: Two youth are exploring math and music

Making Music: Math and Science Out Loud

In our latest exhibition, nurture your inner musician as you discover the math of music and the science of sound. 

Children playing on Pheena the Whale

Share Making Music with Your Community!

Download this flyer Print this flyer PDF en Español Join us for the Opening Day of The Lawrence’s music festival exhibition, Making Music:…

A trapeze artist performs at The Lawrence during Science Fun Days

Summer Science Fundays

From June 10 through August 12, join us every Saturday for fun-filled events featuring special guests and new activities. 

Biotech in Agriculture

Pivot Bio

Pivot Bio Pivot Bio has transformed the way fertilizer is produced and used by the world’s farmers. From their environmentally…

Biotech in Fashion

Bolt Threads

Bolt Threads Bolt Threads is a material solutions company. With nature as their inspiration, they invent cutting-edge materials for the…

Biotech in Food

Impossible Foods

Impossible Foods Impossible’s mission is to make the global food system truly sustainable by eliminating the need to make food…

Biotech in Medicine

Bayer

Bayer Bayer is a Life Science company with a more than 150-year history and core competencies in the areas of…

Students in front of The Lawrence

Summer Camps 2023

Want happy campers? Registration is open for young scientists from first through sixth grade to explore hands-on science. 

Educator Facilitator at Summer Fundays

Education Facilitator (UC Berkeley Student Job)

The Education Facilitator works with learners of all ages (but primarily elementary-aged kids), making science fun with hands-on experiences in different exhibit spaces at The Lawrence Hall of Science, UC Berkeley’s only public science center. In addition to facilitating learning, this position also cares for the accessibility and safety of the learning spaces and communicates any perceived need to supervisors.

A student is using gene-editing in the Biotech Genetics Teen Research Program.

The Power of CRISPR

CRISPR is a powerful gene editing tool that has a myriad of potential applications from curing sickle cell disease to modifying crops to resist specific diseases. However, many ethical considerations are also part of the scientific debate on when and how CRISPR should be used. The Power of CRISPR resources help to explain how CRISPR works, as well as some of the applications and potential ethical considerations being raised as this technique becomes more widespread in the field of biotechnology.

Mars

Mission to the Red Planet

Mars, our neighboring planet, is both a familiar and alien world that has intrigued us for eons. Join us for an exploration of its landscape, history, and mysteries that today’s scientists are trying to solve. We’ll review the history of global missions to Mars – landers, flybys, orbiters and rovers…and learn how to locate Mars in our own night sky.

Three students participate in a Make Math REAL activity.

Make Math REAL: Maker Challenges to Promote Math Learning among English Language Learners

In collaboration with Sonoma State University, Make Math REAL is an NSF-funded project to develop, test, and study Maker Learning…

A young person looks through a telescope of the view at The Lawrence.

Working Towards Equitable Organizations in Environmental Education

Working Towards Equitable Organizations Workshop Series is a collaboration between the Lawrence Hall of Science and an organization called Youth…

A child looks through a telescope.

Share our summer Teen Research Programs with your community!

Share our summer Teen Research Programs with your community! Download this flyer Print this flyer PDF en Español Calling all…

A teacher is writing on a clipboard in a classroom

Professional Learning Science and Literacy Academies

Science and Literacy Integration through Professional Learning Academies Since 2002, the Lawrence Hall of Science has provided teacher professional learning Science…

Children and families participate in the Vaccine Learning Hub activities at their school.

Vaccine Learning Hub

In the Vaccine Learning Hub project, Lawrence staff created and tested hands-on learning experiences designed to build vaccine confidence among families with young children.

Two students are using a microscope and viewing results on a screen during a STROBE science activity

Microscopes of Tomorrow

STROBE is a National Science Foundation Science and Technology Center focused on developing the microscopes of tomorrow—new imaging techniques that help scientists and engineers understand the structure, properties, and interactions inside biological and engineered materials in real time.

Tuff Pupil

Tuff Pupil

This animated series was produced with Computer Science faculty to help young people learn important ideas related to cyber security. Parents, educators, librarians and community leaders – please use these videos with youth in your homes, schools and youth orgs to support conversations about how to safely and smartly use the internet. Y ahora, el episodio uno está en español.

Students from the YESS program are building solar suitcases.

Youth Engaged in STEM and Service (YESS)

Youth Engaged in STEM and Service (YESS) is a four-year (2020-24) National Science Foundation ITEST project to design, implement, and study the cultural relevance and outcomes of two solar-technology summer camp experiences.

A child and an adult work together on a science project at an exhibit at The Lawrence.

Learning Probability Through AI Problem-Solving in a Game-based Environment

Understanding probability is essential for daily life. Probabilistic reasoning is critical in decision making not only for people but also for artificial intelligence (AI). AI sets a modern context to connect probability concepts to real-life situations. It also provides unique opportunities for reciprocal learning that can advance student understanding of both AI systems and probabilistic reasoning. This project aims to improve the current practice of high school probability education and to design AI problem-solving to connect probability and AI concepts.

Elementary computer students taking an assessment in school

Formative Assessment Bundling Literacy and Elementary Science in the NGSS (FABLES)

There is growing awareness of the need for a shift in science instruction in the elementary grades. As elementary classrooms make this shift, high-quality formative assessments are essential for providing teachers with information on where students are in the process of developing proficiency in science.

Two young people explore an exhibit at The Lawrence.

Coding Science Internships

The Coding Science Internships project aims to create and research simulated internship curriculum units that confront barriers to broader participation in computer science and position coding as a tool for doing science.

Two children at an exhibit at The Lawrence.

Virtual Human

The AI Behind Virtual Humans project will develop an interactive museum exhibit aimed at engaging youth and their families in learning about the capabilities and impact of artificial intelligence (AI).

A volunteer and a child work together on a science project.

Connect

This series on mental health was created through a partnership of the Greater Good Science Center, Bay Area Community Resources, and The Lawrence, with an aim of connecting youth with professionals and providing a resource for their community.

The Argumentation Toolkit

The Argumentation Toolkit

The Argumentation Toolkit is a collection of resources designed to help teachers understand and teach scientific argumentation. The Argumentation Toolkit website includes videos and other resources to support teachers in successfully integrating argumentation into science lessons.

Earth

Global Systems Science

Global Systems Science (GSS) is a set of curriculum materials designed for secondary schools. It focuses on societal issues that require science and systems approaches for full understanding. Twelve books, teacher guides, and software can support a 1- to 2-year integrated science course or supplement existing biology, physics, chemistry, Earth science, and environmental science courses.

A young person is building a structure at The Lawrence.

GEMS

Great Explorations in Math & Science (GEMS) activities were tested in thousands of classrooms nationwide. More than 70 GEMS Teacher’s Guides and Handbooks offer supplementary learning experiences for preschool through 8th grade.

Learning is an active process: four teachers are standing together discussing this topic on a poster

Reflecting on Practice

Reflecting on Practice is a professional learning program meticulously designed to build participants’ understanding of, experiences with, and integration of best practices in informal science, technology, engineering and mathematics (STEM) learning environments.

Teachers sitting at tables at The Lawrence during a workshop

Local Control Accountability Plan (LCAP) Toolkit

LCAP Toolkit for Science and Environmental Literacy In 2014, fewer than half of California’s school districts included references to science…

Sunstones at The Lawrence

Visitor Services & Retail Associate (UC Berkeley Student Job)

Come work on our Public Engagement team as a Visitor Services & Retail Associate! Welcome our visitors when they arrive. Join our team to sell admissions, movie tickets, planetarium shows memberships, science kits and more!

Children playing on the DNA sculpture at the Lawrence

Bay Area Science Project (BASP)

As part of the statewide California Science Project network, BASP provides high-quality professional learning for K-12 educators in the greater San Francisco Bay Area, to support and improve their teaching and their students’ learning science.

Two children and a staff member are working together during a science activity.

Marine Activities, Resources, and Education (MARE)

Do you want your students to learn more about the influence of the ocean on them and to explore how they themselves influence the ocean? Are you looking for a school-wide event that will bring faculty, students, and families together, using the ocean as the context for celebrating, learning, and connecting?

The Lawrence Hall of Science

Amplify Science

Amplify Science is research-driven, digitally enhanced core curriculum for Grades K-8 that comprehensively addresses the vision described in the NRC Framework for K-12 Science Education, including the three dimensions of the Next Generation Science Standards. Students inhabit the role of scientists and engineers throughout each unit. Through rich, multi-modal experiences and authentic problem-solving, Amplify Science will help teachers develop the next generation of students to be critical scientists and thoughtful citizens.

Students walking outdoors in the forest during a science activity

BEETLES Project

All BEETLES (Better Environmental Education, Teaching, Learning & Expertise Sharing) resources are based on current research and understandings about how people learn, and tested by dozens of programs in diverse settings all over the country (and beyond!). Although BEETLES materials have been designed for residential outdoor science schools, they’ve been snatched up and used successfully in a wide variety of outdoor science education settings.

Two students light up a light bulb during a science project.

FOSS

FOSS (Full Option Science System) is a research-based science curriculum for grades K-8 developed at the Lawrence Hall of Science, University of California, Berkeley. FOSS has evolved from a philosophy of teaching and learning that has guided the development of successful active-learning science curricula for more than 40 years. The FOSS Program bridges research and practice by providing tools and strategies to engage students and teachers in enduring experiences that lead to deeper understanding of the natural and designed worlds.

A student sitting at a desk in a classroom is working on a science activity

MARE

MARE: Marine Activities, Resources & Education is a program based at the University of California, Berkeley’s Lawrence Hall of Science that seeks to increase literacy in ocean sciences through informal and formal education initiatives.

Children playing on Pheena the Whale

SEPUP

SEPUP (The Science Education for Public Understanding Program) creates innovative science curriculum for use in 6-12 education. Issue-oriented science forms the core of SEPUP’s curriculum materials. Every unit uses personal and societal issues to provide thematic continuity for student investigations and observations. SEPUP is part of UC Berkeley’s Lawrence Hall of Science. Our materials are exclusively distributed by Lab-Aids.

Students conducting research during the Marine Biology Program

Marine Biology Residential

Registration is closed for this program. Please view our Teen Research Programs page for current offerings. Entering Grades 10-11-12 06/05/2022…

A student is outdoors examining nature through a magnifying glass

Bio-Inspired Design

Registration is closed for this program. Please view our Teen Research Programs page for current offerings. Entering Grades 10-11-12 06/13/2022…

Middle school students work in pairs, observing simulations on a laptop, in their classroom using Amplify Science curriculum

Social Media’s Influence on Making Sense of Science for Decision Making

Registration is closed for this program. Please view our Teen Research Programs page for current offerings. Entering Grades 10-11-12 06/27/2022…

Two high school students record environmental data collected in EBAYS program

Environmental Monitoring and Investigations in Urban Settings

Registration is closed for this program. Please view our Teen Research Programs page for current offerings. Entering Grades 10-11-12 07/11/2022…

two students in engineering lab using laptop

Understanding Climate Change with the Help of Python

Registration is closed for this program. Please view our Teen Research Programs page for current offerings. Entering Grades 10-11-12 07/18/2022…

A student building a model robot car

Programming Robots with Python

Registration is closed for this program. Please view our Teen Research Programs page for current offerings. Entering Grades 10-11-12 07/25/2022…

A student wearing safety glasses is testing a liquid in a laboratory

Biotech Genetics

Registration is closed for this program. Please view our Teen Research Programs page for current offerings. Biotech Genetics Are you…

Two children with a model car at a science exhibit

Camps Entering Grade K

Registration is closed for this camp. Please view our Summer Camps page for current offerings. Entering Grade K 9:00 a.m….

A child launching a handmade rocket during a science project

Camps Entering Grade 1

Registration is closed for this camp. Please view our Summer Camps page for current offerings. Entering Grade 1 9:00 a.m….

Students in front of The Lawrence

Camps Entering Grade 2

Registration is closed for this camp. Please view our Summer Camps page for current offerings. Entering Grade 2 9:00 a.m….

A young person looks through a telescope of the view at The Lawrence.

Camps Entering Grades 3 – 4

Registration is closed for this camp. Please view our Summer Camps page for current offerings. Entering Grades 3 – 4…

A child looks through a telescope.

Camps Entering Grades 5 – 6

Registration is closed for this camp. Please view our Summer Camps page for current offerings. Entering Grades 5 – 6…

A child and an adult work together on a science project at an exhibit at The Lawrence.

Camps Entering Grades 7 – 9

Registration is closed for this program. Please view our Teen Research Programs page for current offerings. Entering Grades 7 -…

Math Around The Word Book cover

GEMS: Math Around the World

With a wide range of games and other challenges from many continents, Math Around the World sets mathematics within a multicultural and international context.

Color Analyzer Book Cover

GEMS: Color Analyzers

Teasing a rainbow from a lightbulb. Decoding messages from abstract art. Unveiling the answer to why an apple looks red. This updated and enhanced New GEMS version of the classic teacher guide has students immediately and physically involved in investigating light and color while experimenting with diffraction gratings and color filters.

Ocean Currents Book Cover

GEMS: Ocean Currents

Students gain fascinating insights into our ocean planet through these innovative activities. They learn how wind, temperature, salinity, and density set water into motion, and they make an “in-depth” investigation of the key physical science concept of density.

Two young people explore an exhibit at The Lawrence.

Transforming STEM Teaching Faculty Learning Program (FLP)

The FLP is a professional learning program devised to assist both university and college instructors of STEM courses. The FLP is designed to improve STEM faculties’ instructional practice to support effective student learning.

Close up dove and boy in ADZ Animal Discovery Zone

Animal Discovery Zone Fund

Help us to reimagine learning encounters with live animals, as we redesign our beloved Animal Discovery Room.

Two children conducting a science experiment in the Biotech lab

Biotechnology Learning Lab Fund

Inspire and prepare the next generation of citizens and scientists for the world of possibilities that biotechnology offers.

A child on the plaza in front of The Lawrence

Members and Friends Preview Days

11am-3pm October 16, 17, 23 and 24, 2021 Help us get back in the swing of things and come preview our refurbished spaces, new exhibits, and old favorites! Anyone who held a valid membership during 2020 and 2021 is invited.