We have been hunting for the perfect toddler science equipment in the dollar bins over the past four months or so. Now we have a pretty dandy collection so we're off to hunt for bugs!
Mookie has a great Golden Book titled Insects that she loves to study. It has photos, sketches & cartoon pictures with lots of cool facts. I print out actives for her to paste into her interactive science notebook. She likes to look back at what she's done and I like that we can easily review stuff she's learned. It's also a neat keepsake, just put the date on each page.
We count the number of legs to determine if it's an insect or a spider. These worksheets were designed for grades 1-2, but can be easily modified.