From the lesson Seeing Inside Cells (Science Generation), this interactive model of four types of cells lets students compare some basic features: nuclei, cytoplasm, DNA, cell membranes, cell walls, etc. Not all of these features are present in animal cells, plant cells, bacteria, and yeast. The model lets you turn on and off features to see what they look like and which types of cells have them.

You can find more information here: Become a Better Science Teacher: Teacher Tuneups from SciGen.