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.

Learners tackle this interactive learning object after studying the mathematics of buying. This activity ties together the ideas of net cost, list price, trade discounts, cash discounts, net cost equivalent, and single discount equivalent, as well as the concepts of part, base, and rate.

In this learning activity you'll demonstrate the magnitude of Gross National Product.

In this module, you will see the derivation of the total surface area formula for a cylinder and work through several application problems.

In this activity you'll calculate equations using the order of operations. You'll be introduced to what it is and how it works.

In this learning activity you'll practice converting from one metric unit to another.

In this learning activity you'll explore how units in the metric system are related to each other and practice locating measurements on a metric line.

In this activity we will discover when recursion is the best solution for your computer programming task.

In this learning activity you'll examine a systematic method for converting a decimal number (base 10) into a binary number (base 2).

In this learning activity you'll read key words that direct you to add, subtract, multiply, or divide.

Students use trigonometry to find the coordinates of the blending point where a line and an arc meet. Learners are given the coordinates of the center of the arc, the radius of the arc, and the direction of the line.

After a brief review, the student solves five practical shop problems using right angle trigonometry.

In this fourth part in a series, learners follow the steps of the “mathemagician” to examine three numerical curiosities: Be a Psychic by Predicting Birthdays, Predict a Card with Mind Reading, and Predict the Three Die Values Your Opponent Has Rolled. Learners will also study palindromic numbers and look at two alphametric puzzles.

In this interactive object, part 3 in a series, learners follow the steps of the “mathemagician” to examine four numerical curiosities: What’s Special About 1089, Perfect Squares: 1089 and 9801, The Mathematical Significance of 1776, and The Calculator Number Game. The learner will also study six number patterns and look at one remarkable table. Immediate feedback is provided.

Students review the best practices for using a ruler and answer five basic questions.

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.