A variety of buttons in different colors and sizes.
Small containers or sorting trays..Provide each student with a collection of buttons.
Instruct students to sort the buttons by color first.
After sorting by color, ask students to count the number of buttons in each color group and record the quantities.
Repeat the process by sorting the buttons by size and then counting each size group.
Discuss the different groups and quantities, reinforcing the concept of quantifying groupings.