Evaluate numerical expressions with unit-fraction exponents or radicals, and convert between the two forms of representations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...

Given a complex number of the form a+bi, find its angle. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Given the absolute value and the angle of a complex number, express the number in the form a+bi. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Solve geometry problems with various triangles by using all you know about similarity and congruence. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Given two similar triangles and some of their side lengths, find a missing side length. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Given two triangles, determine whether they are congruent and use that to find missing angle measures. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Given two similar triangles and some of their side lengths, find a missing side length. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Given one side length and an acute angle in a right triangle, find another side using trigonometry. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

A review of simple word problems that just involve basic arithmetic operations and a single variable. Includes examples and practice questions.

Goes over the properties that apply to algebraic expressions and equations. Includes examples and practice questions.

A basic review of circles and how to calculate the circumference, radius, diameter, and area. Includes practice questions.

In this exercise, students practice their understanding of the concepts of less and greater. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice identifying halves and fourths. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice sorting by count or category. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice counting with small numbers. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Practice making a number by adding other numbers. All numbers in these problems are less than 10. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice comparing numbers of objects. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Compare the lengths of 2 objects indirectly by using a third object. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice identifying equal parts of circles and rectangles. Students receive immediate feedback and have the opportunity to get hints, watch a tutorial video, and try questions repeatedly.

Practice breaking up big division problems into smaller, simpler problems. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Find volume of 3-dimensional figures by counting unit cubes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Recognize volume as an attribute of solid figures and understand concepts of volume measurement. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice finding negative numbers on the number line without reference to zero. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Students take a quiz over the concept of integer opposites, also known as additive inverses. After answering each question they are given feedback. Hints are available but affect the score. If students are still struggling with the...