Students construct the circumcenter of a triangle. In this constructing the circumcenter of a triangle lesson, students construct a triangle using Cabri Jr. Students draw perpendicular bisectors of the sides of the triangle. Students...

High Schoolers investigate the perpendicular bisector of a line segment. They use Cabri Jr. to construct the perpendicular bisector of a segment. The dynamics capabilities of Cabri Jr. allow your learners to observe the lengths of the...

High schoolers investigate parallel and perpendicular lines. They use Cabri Jr. to construct and explore the relationships between the slopes of parallel and perpendicular lines. The drawing and measurement tools available with Cabri Jr....

Students determine patterns. In this mathematics lesson, students act out a skit, play a sequence game, and complete patterns. Students use problems solving skills.

Students study African traditional architecture. They examine how African ornaments, wall painting and motifs use geometric shapes to express and explain the culture. They discuss the ornaments and architectural designs in the setting...

In this surface area and volume of prisms instructional activity, students identify the requested measurement of each of 10 geometric shapes. The first two shapes are rectangular prisms, students tell surface area and volume. The next...

Third graders explore the concept of symmetry using geometric shapes, capital letters and various other shapes. They fold shapes to show symmetry, draw lines of symmetry and create symmetrical designs.

Students study pyramids. In this prisms lesson plan, students explore the attributes of pyramids. Students will explore the lateral surface area of pyramids and be able to distinguish pyramids from other space shapes.

Fifth graders view prints of M.C. Escher's work. They look at examples of geometric figures and polygons and discuss places they have seen them. Students create their own tessellations. They write a report about the process they used in...

Students practice geometry skills. For this geometry lesson, students find the surface area of cubes and prisms, identify shapes on solids, and distinguish between 2-dimensional objects and solids.

Students calculate the area of different polygons. In this geometry lesson, students draw shapes using different scale factors. They calculate and make sure there is enough room for te soccer arena through their calculations.

Students calculate the perimeter and area of polygons. In this geometry lesson, students apply formulas of perimeter to solve geometric problems. They calculate the area of a dog fence and create ways to keep the dog in that area.

Students identify symmetry in road signs. In this geometry lesson, students explore objects in the real world for symmetry. They perform translation, rotation and reflection.

In this volume and surface area worksheet, students are given the volume of 4 figures and find the area. A web site reference is given for additional activities. 

In this area instructional activity, students use shaded grids to calculate area, writing area in square units. A reference web site is given for additional activities.

In this area worksheet, students use shaded grids to calculate area, writing the area in square units. A reference web site is given for additional activities.

In this area worksheet, students calculate area using shaded grids, writing total area in square units. A reference web site is given for additional activities.

In this area worksheet, students calculate area using shaded grids, writing the area in square units. A reference web site is given for additional activities.

In this area worksheet, students use shaded areas on a grid to calculate area, writing the area in square units. A reference web site is given for additional activities.

In this area activity, students calculate the area shown on shaded grids, writing total area in square units. A reference web site is given for additional activities.

In this area worksheet, students calculate area using shaded areas on grids, writing the area in square units. A reference web site is given for additional activities.

In this area worksheet, students calculate area using shaded grids, writing total area in square units. A reference web site is given for additional activities.

In this area worksheet, students use shaded grids to calculate area, writing area in square units. A reference web site is given for additional activities.