Fractions: Substraction with same denominator

Age

5.

Materials

• Red fraction circles in green frames (ten circles: 1 is undivided and the others are divided into 2 -10 equal parts.
• Label with fractions written on them: 1, 1/2, 1/2, 1/3
• Pencil and paper
• Skittles
  

Preparation

This is an individual presentation.

Presentation

1. Have the child bring over the two trays of fractions.
2. Write a subtraction equation on the paper. 4/8 – 1/8 =
3. Create 4/8 and place it in front of the tray.
4. Directres points to 1/8 and tells the child, “I will now take away 1/8”
5. Move 1/8 from the 4/8 and move it off to the side.
6. Directress asks the child to count how many 8th are left. (3/8)
7. Have the child write the answer.
8. Repeat a few times.
   

Control Of Error

The Directress.

Purpose

• To help the child gain a sensorial impression of fraction.
• To introduce the concept and notation of fractions.
• To introduce sensorial exploration of equivalency among fractions.
• To introduce simple operations.