Curated OER
Pythagorean Theorem
Students solve problems using the Pythagorean Theorem. In this geometry lesson plan, students identify the sides and angles of a right triangle. They find the different trigonometric ratios and solve using sine, cosine and tangent.
Curated OER
Equal Additions
Students explore the relationships between numbers through the use of "equal addition" and "equal subtraction." Through the use of number sense, they are able to computer addition and subtraction problems mentally. Individually,...
Curated OER
Arithmetic: Revision
Pupils practice with a variety of simple equations involving addition, subtraction, multiplication and division. Explanation is followed by each block of equations given to solve. They are set loose to complete additional equations for...
Curated OER
Measuring New Heights
Eighth graders explore the metric system. After a class demonstration, they complete a worksheet on converting metric units. In groups, 8th graders measure their height. They graph the results of the classroom. They convert heights...
Curated OER
Misconceptions in Mathematics: Multiplying Decimals
In this misconceptions about multiplying decimals learning exercise, learners read several problems, and common misconceptions about the solutions, then read corrected solutions and complete follow-up exercises.