This lab is a very fun lab since kids love using the microscopes to look at pond water! Before you do this lab, make sure that you have pond water that is full of life! Get the green algae, muck at the bottom of the pond. Check for Daphnia. They are pretty large and can easily be seen under low power and even with the naked eye as a little dot that moves around fast. The NGSS standard LS2.B for High School and 7th grade would apply here since the food chain is talked about here.