Math Unit 4

• Four-year-olds are able to apply size words such as big and small, short and tall to label objects and experiences in their environment. They are now able to compare objects using terms such as “heavier” or “longest.” They still confuse terms as they are expanding their vocabulary, stating “I am 45 pounds tall.”

  Examples:

  1. picks up two rocks and determines which one is heavier and which one is lighter

  2. looks at French fries at lunch, and notices which is longest and which is "really short"

  3. looks at three houses in the block center and says, "This one is the tallest."

  4. uses string to measure the perimeter of the class pumpkin

  5. using unifix cubes to measure the length of objects in the classroom

• Four-year-olds can consider two or more attributes as they compare objects. They create more specific sets, saying things like “Here are the long, skinny ones and here are the short, fat ones.” They can base comparisons using language big/small, heavy/light, tall/short.

Examples:

1. groups objects and says, "These are all big, heavy blocks and these are all little, light blocks

2. groups children as girls with long pants, girls with short pants, boys with long pants and boys with short pants

3. says, "The big rocks are heavier than the little rocks."

4. says, "The thin line is longer than the thick line on my paper."