Illustrative Mathematics
Illustrative Mathematics: 3.oa the Stamp Collection
This task uses language, half of the stamps, that students associate with multiplication by the fraction 1/2. Students will understand half of 120 to mean the number obtained by dividing 120 by 2. For students who are unfamiliar with...
University of Cambridge
University of Cambridge: Nrich: Game Chocolate Bars
Use this game to practice finding how many of the chocolate bars (or parts) you will get when you share them with your friends at the party. If you don't figure it out correctly the computer will tell why.