Users study a chart containing numbers 1 to 99 and look for trivial palindromes as well as double and triple iteration palindromes. The reverse and add technique is demonstrated.

In this animated activity, learners read about the properties of a square and its components. They then work practice problems to find the perimeter and area of squares.

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 learning activity you'll explore a graphical depiction of a radian for angular measurement.

In this interactive object, learners adjust the caster of a vehicle to control its directional stability.

This learning object shows how the shape of a stain defines the angle of impact. In general terms the more circular the stain, the more perpendicular will be the angle at which it struck the surface. The more elliptical the shape of the stain, the more acute the angle will be. With practice and experience, the analyst can recognize the general angle of impact based solely on the shape of the stain.

In this interactive object, learners view various components of gears and read descriptions of them. Learners then identify the location of each of these components in a drag-and-drop exercise.

In this learning activity you'll practice converting between degree minute second and decimal degree.

In this learning activity you'll calculate sine bar problems.

25 terms and 25 matching descriptions

References for lines and angles

In this game, you will review what you learned about lines and angles. Answer questions correctly to add creatures to your space band. If you answer incorrectly, the aliens will keep the creature for themselves!

Match the Math vocabulary word to its definition