Mathematics Resources for Secondary Classrooms

Mathematics is everywhere, there is no escape.

Mathematics Activities for Class 9

  • Activity 1: To make a square root spiral. Click here 
  • Activity 2: To verify the identify a3-b3= (a-b) (a2+ab+b2), for simple cases using a set of unit cubes.  Click here
  • Activity 3: To verify the identify a3+b3= (a+b) (a2-ab+b2), for simple cases using a set of unit cubes. Click here
  • Activity 4: To verify the identify (a+b)3= a3+3ab (a+b)+b3, for simple cases using a set of unit cubes. Click here
  • Activity 5: To verify the identify (a-b)3= a3-3ab (a-b)-b3, for simple cases using a set of unit cubes.  Click here
  • Activity 6: To interpret geometrically the factors of a quadratic expression of the type x2 +bx +c, using square grids, strips and paper slips. Click here
  • Activity 7: By paper cutting and pasting, verify if two lines intersect each other then vertically opposite angles are equal.
  • Activity 8: By paper cutting and pasting, verify that the sum of interior angles of a triangle is 180 degrees.
  • Activity 9: Using broom sticks, verify that the sum of any two sides of a triangle is greater than the third side.
  • Activity 10: To explore the sum of exterior angles of a polygon by paper cutting and pasting. Click here
  • Activity 11: To find the coordinates of any general point on the x-axis as well as on the y-axis by observation method.
  • Activity 12: By paper cutting and pasting verify that "angle subtended by an arc at the centre of a circle is twice the angle subtended by it at any other point on the remaining part of the circle".
  • Activity 13: By paper cutting and pasting verify that "angles in the same segment of a circle are equal. Click here
  • Activity 14: Explore the measure of angle in a semicircle, major segment and minor segment of a circle. 
  • Activity 15: To explore Cyclic quadrilateral Theorem

  Write to me at mathclass_khms@yahoo.co.in, if you have any query or suggestion. 

 

 

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