Many might already be familiar with Harcourt School Links for Math but Science was new to me~ I just learned they had these great interactive links and am finding a bunch of neat things to use - even for our cells lapbook!
I really liked the"Cell Inspector" interactive and think it will be a great addition to our unit and also I like "How do Plan and Animal Cells Differ"? great for a Venn Diagram for our lapbook~ I could go on but I will stop there. Be sure and check it out if you have the time. The site is for K-6 grade in case your looking for a specific content level.