The Lawrence Hall of Science
The public science center of the University of California, Berkeley.
Wednesday - Sunday
10:00 a.m.–5:00 p.m.
We’ll bring our science programs to you.
We partner with school districts to support science learning. We offer district-wide elementary, middle, and high school programs, either virtually or in-person.
We collaborate with a range of partners to innovate in science education. Together, we go further.
Plants need nutrients to grow. This is why we apply fertilizers to grass and food crops. In this activity, learners will explore how fertilizers can affect lakes and other bodies of water. Learners will first have to collect a sample of algae from a pond, lake, or stream. Using these samples. Learners will then examine the effects of fertilizer and fish food on the algae over two weeks. Step-by-step instructions are included with photos along with safety recommendations. Activity guide includes a “What’s going on?” explanation and relevant connections to the effects of algae growth and death on rivers and lakes.
Preparation Time: 10 minutes
Activity Time: 20 minutes + data collection
DIY Lake Science Algae in ExcessPDF
Sign up to hear about events, camps, classes and more!