Ocean Estimation

Materials Needed:
Goldfish (crackers)
Assorted shells
Assorted sized plastic bags
Glue
Poster boards (two)

What to Do:
Fill one large bag and one small bag with various amounts of goldfish and one large bag and one small bag with assorted shells.
Attach the goldfish bags to one poster board and the shell bags to the other poster board.
Ask children to estimate how many goldfish and how many shells are in each bag and record their answers. After everyone has guessed, count the number of fish and shells in each bag as a class and record on the posterboard.
Discuss which guesses were closest and ask each child, “Why did you guess that number?”. Talk about things to think of when making an estimation.
Post the posters on the wall for parents to see.