• Brainly User
U can make some shapes like eatables and one balance it ( taraju ) and explain how it works and calculate the rupees too and add more things....
Mark as besty
can u tell me any on trigonometry plzzzzzzz or any other for 10 th grade cuz 40 students of one class is making one model in our school so ny other?????
This model is a working model and you should read this if you are searching for a quick maths model to make. Its related to trigonometry. The name of this device is theodolite.A theodolite is an instrument used for determining the horizontal and vertical angles between two points. 
Material Required:
 Piece of wood or cardboard wider than the protractor
Push pin or nail
Hammer (optional)
Small weight
1. Align the center of the flat edge of the protractor with the centre of the
long edge of the wood or cardboard.
2. Firmly attach the protractor to the wood or cardboard using the push pin
or nail. Push the push pin or nail in by hand or use a hammer.
3. Avoid breaking the protractor or shifting it out of position.
4. Attach the weight to one end of the string. Attach the other end of the
string to the push pin or nail.
hope i helped u:)
plzzzzzzzzz mark as best if helpful