### Area of Parallelogram

"From Figure 4 he sees a parallelogram equal to a rectangle of the same base and altitude. Cut out and…

### Area of Trapezoid

"The student sees the trapezoid is equal in area to a rectangle whose base is the average base of the…

### Area of Trapezoid

"The student sees the trapezoid is equal in area to a rectangle whose base is the average base of the…

### Three Bears and Chairs

Illustration of the three bears with three chairs that can be used to write mathematics story problems…

### Children On A Bench

Illustration of children sitting on a bench and standing that can be used to write mathematics story…

### Comparison Of Units Of Capacity

Illustration comparing the fundamental units of measure quart and liter.

### Comparative Volumes Of A Cone And Cylinder

Illustration used to compare the volumes of a cone and a cylinder by emptying sand from the cone into…

### Comparative Volumes Of A Cone, Sphere, And Cylinder

Illustration used to compare the volumes of a cone, a sphere, and a cylinder.

### Comparison Of Units Of Cubic Measure

Illustration comparing the fundamental units of measure 1 cubic yard and 1 cubic meter.

### Comparative Surfaces Of A Cylinder And Sphere

Illustration used to compare the surfaces of a cylinder and a sphere.

### Children Playing Darts

Illustration of children playing darts that can be used to write mathematics story problems involving…

### Dry Measures

Containers of dry measure in comparison: one bushel, peck, one half bushel, and one half peck. Illustration…

### Liquid Measures

Containers of liquid measure in comparison: one gallon, quart, pint, and gill.

### Children Holding Number Cards

Illustration of children holding number cards that can be used to write mathematics story problems involving…

### Comparative Volumes Of A Pyramid And Prism

Illustration used to compare the volumes of a pyramid and a prism by emptying sand from the pyramid…

### Child Holding Rulers

Illustration of a child measuring with rulers that can be used to write mathematics story problems involving…

### Children Holding Rulers

Illustration of two children holding rulers that can be used to write mathematics story problems involving…

### Children Holding Rulers

Illustration of children holding rulers that can be used to write mathematics story problems involving…

### Comparison Of Units Of Square Measure

Illustration comparing the fundamental units of measure 1 square yard and 1 square meter.

### Comparison of Units of Weight

Illustration comparing the fundamental units of measure ounces to grams and pounds to kilograms.