Fractions: Substraction with same denominator

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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.

Points Of Interest


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.

Variation


Links


Handouts/Attachments