This activity will help your child get a mental picture of some big numbers.

• Take a walk around home or school or somewhere your child passes often. Look for buildings or pavements that are made of bricks or concrete blocks, and look for a wall or a section of wall, and count the bricks or blocks.
  
  
• Find a part of a building that has about 100 blocks or bricks. It may be a wall, that fences off a yard, or a frame around a window or doorway, or a path to a doorway.
  
  
• Find a wall that has about 1,000 bricks or blocks.
  
  
• Can you find anything that has 10,000 bricks or blocks?
  
  
• Then, when you need a mental picture of a big number, imagine the wall where you found that number of bricks.