Our chemistry teachers love these blocks. We use them for a lab practical over density and measurement. This set has the most variety we could find. The lead block gets banged up a bit with use, but that is just the nature of lead.
Very easy and effective away to get the point of density across.
[1 of 1 customers found this review helpful]
This product allowed me to give very minimal instruction to the students and allowed them to discover the identity of the blocks on their own. A good inquiry-based lesson.