Login
Trace:
•
illustrations
PEN wiki
Zinc-Copper Battery with Nail and Salt-water illustrations
Here's an illustration from Mim's book of science projects:
batteries.pdf
You could leave a comment if you were logged in.
add
archive
background
docs
finding.materials
lessons
admin.requests
feature.requests
get.involved
hackathon.spec
lesson.stages
login.info
seeds
sidebar
teach
teaching.opportunities
write