math Grades 6 to 8 Live now

Geometry and Measurement Grades 6 to 8

Geometry and Measurement Grades 6 to 8 is a 12-week middle-school geometry course that uses only things a family already has: cardboard, paper and scissors, a ruler and tape measure, string, a protractor (or a printed one), graph paper, small cubes or sugar cubes, straws, a tin can and a flashlight. The crew turns a garage corner into the Blueprint Table and designs, draws and builds a cardboard model clubhouse, and every week's math makes one part of the build work. Students find the area of triangles and polygons by cutting and composing, draw polygons on a coordinate grid, unfold boxes into nets to find surface area, pack boxes with cubes for volume, draw the room to scale, build triangles from three measures, wrap string around a can to meet pi, write equations for unknown angles, slide, flip, turn and enlarge shapes on a grid, prove and use the Pythagorean theorem, and meet the irrational numbers that round things bring. Every answer is computed, every question is checked, and the course ends with a Build Day where the student shows the finished model to the family. Short daily lessons, a hands-on Build Lab each week and a Saturday Build Day. 100% free, start to finish.

• Find the area of triangles, quadrilaterals and polygons by composing and decomposing them, on paper and on the coordinate plane
• Represent boxes and pyramids with nets to find surface area, and find the volume of prisms, including ones with fractional edges
• Use scale drawings to find real lengths and areas, build triangles from given measures, and describe the slices of solids
• Use the formulas for the circumference and area of a circle, and write and solve equations for unknown angles
• Describe slides, flips, turns and dilations with coordinates, and tell when two figures are congruent or similar
• Explain and apply the Pythagorean theorem, find the volume of cylinders, cones and spheres, and place irrational numbers on a number line