+
Interactive
Curated OER

Example and Steps to Solving Linear Systems Using Substitution

For Students 8th - 11th
In this linear equation worksheet, students solve five systems of linear equations using the substitution method.  Three examples with steps to solve are provided.
+
Lesson Plan
Curated OER

Quadrilateral Explorations

For Teachers 9th
Ninth graders identify quadrilaterals and label the vertices of quadrilaterals. they justify their identification of the quadrilaterals. Students work in groups to identify and create quadrilaterals
+
Lesson Plan
Curated OER

More of DeMoivre's Theorem

For Teachers 10th - 11th
Students identify DeMoivre's Theorem. In this precalculus lesson, students derive the law of sine and cosine as it relates to DeMoivre's Theorem. They identify the best time to use these formulas.
+
Lesson Plan
Curated OER

Orbiting Satellites

For Teachers 11th
Eleventh graders explore the concept of orbits.  For this Algebra II lesson, 11th graders investigate Earth-orbiting satellites as they use algebraic thinking to calculate altitude and velocity. 
+
Lesson Plan
Curated OER

Ratio and Proportion

For Teachers 7th - 8th
Students investigate ratio and proportion.  In this middle school mathematics lesson, students write ratios and find equal ratios.  Students use ratio and proportion to distinguish between healthy and unhealthy body proportions.
+
Lesson Plan
Curated OER

Counting Principle

For Teachers 8th - 10th
Students identify the different outcomes given a situation. In this algebra lesson, students calculate the possible outcome using the counting principle. They compare and analyze patterns to make their predictions.
+
Lesson Plan
Curated OER

Complexity

For Teachers 10th - 12th Standards
Students perform mathematical operations on complex numbers. After a lecture/demo, students utilize a worksheet imbedded in this plan to gain practice performing operations on complex numbers.
+
Lesson Plan
Curated OER

Around and Around We Go

For Teachers 4th
Fourth graders discover that a polygon is a closed figure formed by line segments, and that the perimeter of a polygon is the sum of the lengths of its sides. They utilize a worksheet imbedded in this plan to gain lots of practice with...