Difference between revisions of "Fractions: Multiplication by a whole number"
From wikisori
| Line 1: | Line 1: | ||
=== Age === | === Age === | ||
| − | 5<br> | + | 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 12: | Line 12: | ||
=== Preparation === | === Preparation === | ||
| − | This is an individual presentation.<br> | + | This is an individual presentation.<br> |
=== Presentation === | === Presentation === | ||
#Have the child bring over the two trays of fractions. | #Have the child bring over the two trays of fractions. | ||
| − | #Write a multiplication equation on the paper: 2/8 x | + | #Write a multiplication equation on the paper: 2/8 x 4 = |
#Directress tells the child, “We will take 2/8 four times”. | #Directress tells the child, “We will take 2/8 four times”. | ||
#Take 2/10 one time, two times, three times and four times. | #Take 2/10 one time, two times, three times and four times. | ||
| Line 26: | Line 26: | ||
=== Control Of Error === | === Control Of Error === | ||
| − | The Directress.<br> | + | The Directress.<br> |
=== Points Of Interest === | === Points Of Interest === | ||
| − | <br> | + | <br> |
=== Purpose === | === Purpose === | ||
| Line 41: | Line 41: | ||
=== Variation === | === Variation === | ||
| − | <br> | + | <br> |
=== Links === | === Links === | ||
| − | <br> | + | <br> |
=== Handouts/Attachments === | === Handouts/Attachments === | ||
| − | <br> | + | <br> |
[[Category:Mathematics]] | [[Category:Mathematics]] | ||
Latest revision as of 06:02, 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 multiplication equation on the paper: 2/8 x 4 =
- Directress tells the child, “We will take 2/8 four times”.
- Take 2/10 one time, two times, three times and four times.
- Push them all together and have the child count the total number of 10ths. (8)
- Show the child how to write the answer.
- Do a few with the child and then have the child do some by himself.
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
