This month's kit

Centrifuge & circulation

Blood looks like one thing. Spin it, and it becomes three — plasma, a thin band of cells, and the red stuff underneath.

What's inside

  • Spin a sample and watch blood separate
  • See what plasma, platelets, and red cells do
  • Learn how centrifuges power real lab tests

Kits are designed by high school students and educators. Every part is safe and non-toxic, with instructions written for the age you pick.

Register for pickup

Kits are local pickup only. We'll email you when yours is ready to collect.

Child's age group
The archive

Past kits

Every kit that came before this month. The lessons stay online for good, so nothing is ever really missed.

Kit 01 · July 2026

Prosthetics by design

Build a body-powered prosthetic hand and learn what makes a joint move.

View the lessons