Materials:
A sombrero or large straw hat
Yard stick or tape measure
Paper and pencil -divide paper into four columns: "name", estimate", "real amount", "difference"
Something to toss like a beanbag.
Place the hat in the center of the floor. Assist your child in measuring a distance six feet away from the hat.(Discuss: How many feet in each yard? How many inches in two yards?) You can change the distance depending upon the age of the child.
Have each child estimate how many times out of ten tries that he can toss the beanbag into the hat. Write down the estimate. Then have the child toss the beanbag ten times and count how many landed in the hat. Mark the real amount. Now have your child find the difference between the two numbers. Subtract the smaller number from the larger number. Write down the difference. When everyone in the family has tried, then compare the differences. Who was the closest guessing the correct number of successful tosses?