Let's take a look at how to observe cells under a microscope ... Cut a small chunk from your onion. Be careful with knives. Ask an adult if you need help. Peel a thin layer off that chunk and ...

Let's take a look at how to observe cells under a microscope ... Cut a small chunk from your onion. Be careful with knives. Ask an adult if you need help. Peel a thin layer off that chunk and ...