Derivation of Pie
Product Code : JA-MLI-1760
The Derivation of Pie model (SKU JA-MLI-1760) is a foam circle of 28 cm diameter cut into 16 equal parts, with a magnet on the back of each part for demonstration on a magnetic board. The teacher shows the whole circle, then rearranges the 16 sectors point-up and point-down into a shape close to a parallelogram whose length is half the circumference and whose height is the radius, which leads to the formula area = pi r². JaincoLab makes this derivation of pi model in Ambala, India.
Specifications
The model is made of foam, has a diameter of 28 cm and is cut into 16 equal parts, each with a magnet on the back for use on a magnetic board; colours are confirmed on the quotation.
| Product | Derivation of Pie |
| SKU | JA-MLI-1760 |
| Material | Foam |
| Diameter | 28 cm |
| Parts | 16 equal sectors |
| Mounting | Magnet on the back, for a magnetic board |
Deriving the area of a circle with the model
Rearranging the 16 equal sectors gives an almost rectangular shape, which lets pupils see why a circle's area is half its circumference multiplied by its radius, that is pi r².
- Deriving the formula for the area of a circle
- Showing a circle divided into equal sectors
- Linking circumference, radius and area
- Fractions of a circle such as halves, quarters and sixteenths
- Whole-class demonstration on a magnetic board
Scope of supply and ordering
The listing covers one Derivation of Pie model of 28 cm diameter in 16 parts. A magnetic board is not listed as part of the item. Accessories, spares and quantities are confirmed on the quotation.
Minimum order quantity, lead time and packing are confirmed on each quotation for the quantity ordered and the delivery destination. JaincoLab supplies single-school orders as well as bulk requirements for school groups, colleges and education projects.
Frequently asked questions
How many parts is the circle cut into?
The 28 cm diameter foam circle is cut into 16 equal parts.
How is it displayed?
Each part has a magnet on the back, so the model is used on a magnetic board.
What does the model help to derive?
It helps derive the area of a circle, area = pi r², by rearranging the sectors.
Is a magnetic board included?
No board is listed with the item; ask for one in your enquiry if needed and it will be confirmed on the quotation.
Related products
See the full maths lab equipment range from JaincoLab for other items used in the same lessons.
Request a quote
To order the Derivation of Pie, send the SKU JA-MLI-1760, the quantity and the delivery destination through the JaincoLab contact page or email [email protected]. For tender or project supply, see our tenders page.
