In part 2 of this series, learners follow the steps of the “mathemagician” to examine these numerical curiosities: The 189 Challenge; An Armstrong Number: What’s Special About 153? Is 495 Different or Indifferent? Is 6174 Different or Indifferent? It is always 618, and Beginning and Ending the Same.

In this interactive object, learners examine the properties of equality and use those properties to solve simple equations.

Learners follow a step-by-step process to solve trade discount problems. A short quiz completes the activity.

Learners examine the properties of a triangle and work practice problems to find a triangle's perimeter and area.