An explorer shows his information to Bob1 (57 K)

The explorers listen to the instructions of their next challenge (37 K)

This explorer uses her ruler to make an equilateral triangle (49 K)

Here's a better way of doing this.... (47 K)

These explorers are collaborating information about the models (51 K)

More with modeling (42 K)

He is using a model called Snowflake (56 K)