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In this simulation, learners use M&M™ candy to explore radioactive isotope decay.

This activity was designed for blind learners, but all types of learners can use it to investigate heterogeneous and homogeneous mixtures and solutions, identify the differences, and explore the conce

In this quick activity, learners drink Avogadro's number worth of molecules - 6.02x10^23 molecules!

In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.