Here are some more ideas:

• Play a board game with your family e.g. Snakes and Ladders
   
• Practise counting objects around the house, up to 20 items or more if you want a challenge.
   
• Count how many things you can do in 30 seconds e.g. how many starjumps can you do? How many claps? How many times can you stand up then sit down?
   
• Work on simple addition or subtraction problems using counters, buttons or other small objects.
   
• Number hunt - Hide numbers from 1-20 around the house. Can you order the numbers from smallest to largest?
   
• Repeating patterns - Use any toy (construction materials/animals/loose parts) and create a repeating pattern. Remember a repeating pattern can be made from colours, shapes, size, sounds.
  Example:
  red, yellow, blue, red, yellow ...
  Large, medium, small, large...
  1,7,4,1,7,4,1,7....
  Clap, stomp, click, clap, stomp...
   
• Write a number sequences to 20 leaving some blanks in between. Write the missing numbers on pegs and get your child to fill the gaps
   
• Draw a number line to 20. Shout a number out and see if your child can say the number that is one more or one less than the given number.
   
• 3D shape hunt, call out a 3D shape - Sphere, cylinder, cone, cube, cuboid, pyramid and see if your child can find an object in the house with that shape before you can. Extend by describing the shape: "I’m looking for a 3D shape with no verticies (corners), 3 faces and 2 edges."