Difference between revisions of "Fractions: Substraction with same denominator"
From wikisori
m |
|||
| (One intermediate revision by the same user not shown) | |||
| Line 1: | Line 1: | ||
=== Age === | === Age === | ||
| − | + | 5.<br> | |
=== Materials === | === Materials === | ||
| − | *Red fraction circles in green frames (ten circles: 1 is undivided and the others are divided into 2 -10 equal parts. | + | *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 | *Label with fractions written on them: 1, 1/2, 1/2, 1/3 | ||
*Pencil and paper | *Pencil and paper | ||
| Line 16: | Line 16: | ||
=== Presentation === | === Presentation === | ||
| − | #Have the child bring over the two trays of fractions. | + | #Have the child bring over the two trays of fractions. |
| − | #Write a subtraction equation on the paper. 4/8 – 1/8 = | + | #Write a subtraction equation on the paper. 4/8 – 1/8 = |
#Create 4/8 and place it in front of the tray. | #Create 4/8 and place it in front of the tray. | ||
#Directres points to 1/8 and tells the child, “I will now take away 1/8” | #Directres points to 1/8 and tells the child, “I will now take away 1/8” | ||
#Move 1/8 from the 4/8 and move it off to the side. | #Move 1/8 from the 4/8 and move it off to the side. | ||
#Directress asks the child to count how many 8th are left. (3/8) | #Directress asks the child to count how many 8th are left. (3/8) | ||
| − | #Have the child write the answer. | + | #Have the child write the answer. |
#Repeat a few times.<br> | #Repeat a few times.<br> | ||
| Line 35: | Line 35: | ||
=== Purpose === | === Purpose === | ||
| − | <br> | + | *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.<br> | ||
=== Variation === | === Variation === | ||
Latest revision as of 17:07, 2 June 2009
Contents
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
- Have the child bring over the two trays of fractions.
- Write a subtraction equation on the paper. 4/8 – 1/8 =
- Create 4/8 and place it in front of the tray.
- Directres points to 1/8 and tells the child, “I will now take away 1/8”
- Move 1/8 from the 4/8 and move it off to the side.
- Directress asks the child to count how many 8th are left. (3/8)
- Have the child write the answer.
- 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
