[Free Registration/Login Required] Students use similar triangles to determine the height of the base of a tree house. Click learn more to watch a video and click challenge me to answer a practice question.

Picture a roll of toilet paper; assume that the paper in the roll is very tightly rolled. Assuming that the paper in the roll is very thin, find a relationship between the thickness of the paper, the inner and outer radii of the roll,...

About how many cells are in the human body? The purpose of this task is for learners to apply the concepts of mass, volume, and density in a real-world context. Aligns with G-MG.A.2.

Material to supplement classroom instruction on parallel lines: a lesson on angles with parallel lines, a practice quiz, and a link to an investigation on angles with parallel and non-parallel lines.

A comprehensive guide for learning all about angles with definitions, examples, and practice questions.

A geometry instructional activity that examines the history and structure of ancient pyramids and engages students in constructing pyramid models. A comprehensive instructional activity that considers students with diverse learning...

Determine which angle has a greater measure by looking at the size of the opening between the angle's rays. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Who was Pythagoras and what is his theorem? Explore this concept and its relationship to the measurement of a right triangle in this test prep lesson plan. The lesson includes an interactive worksheet where students discover the answers...

This site has a few creative lesson plans on using the digital camera in a mathematics classroom. Includes geometry and measurement activities. (The link for the counting book does not work in archived version of site.)

[Free Registration/Login may be required to access all resource tools.] Solve supplementary angle problems.

A ten question test for assessing measurement concepts of area and perimeter. Assessment is scored online and student scores are compared with other students who have taken the assessment. Great assessment tool.

This site provides practice problems for calculating central angles and calculating arc length.

[Free Registration/Login may be required to access all resource tools.] Use the strategies of making a table and looking for a pattern to solve problems.

AAA Math's interactive tutorials and lessons assist students grades K-8 improve their understanding of a wide range of arithmetic topics. Students are provided with immediate feedback as they complete the "Learn," "Practice," and "Play"...

This site contains a lesson plan for high school age learners. The objective is to discover the factor of proportionality in similar polygons and to relate this factor to the perimeters and areas of similar polygons.

The purpose of this task is to ask students to write expressions and to consider what it means for two expressions to be equivalent. Aligns with 6.EE.A.

[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on how to find the perimeter of a shape using a grid.

Half-length practice test for the third grade OAT (Ohio Achievement Test). The test includes 17 multiple-choice and 4 open-response questions dealing with topics such as number sense (order of operations, ratios), measurement (metric...

Part two of two; The March 2006 7th grade Math test from the State of New York. The test is eight open-response questions dealing with topics such as data analysis (making graphs, Venn diagrams), measurement (unit conversions), and...

Half-length practice test for the third grade OAT (Ohio Achievement Test). The test includes 15 multiple-choice and 5 open-response question dealing with topics such as measurement (time, angles, ruler), data analysis (bar graphs,...

Students learn about trigonometry, geometry and measurements while participating in a hands-on interaction with LEGO MINDSTORMS NXT technology. First they review fundamental geometrical and trigonometric concepts. Then, they estimate the...

A "three star geometry problem" requiring knowledge of how to complete geometric proofs and some prior math skills to figure the shortest distance between the opposite corners of a cuboid.

A geometry proof problem involving a right triangle and finding angles of equal measure.

This lesson provides basic instruction on the major concepts in algebra. Content includes a focus on fractions, units of conversion, complex numbers, quadratic equations, factorization and roots of polynomials, solving equations, systems...