Difference between revisions of "Double Digit Group Division"
From wikisori
(New page: === Age === <br> === Materials === <br> === Preparation === <br> === Presentation === <br> === Control Of Error === <br> === Points Of Interest === <br> === Purpose...) |
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Line 1: | Line 1: | ||
=== Age === | === Age === | ||
− | <br> | + | 7.<br> |
=== Materials === | === Materials === | ||
− | + | *Stamp Game | |
+ | *Work Cards | ||
=== Preparation === | === Preparation === | ||
− | <br> | + | <br> |
=== Presentation === | === Presentation === | ||
− | <br> | + | #Given a division problem, the child prepares the stamps and the skittles. |
+ | #Since we want to do a group division, we put the skittles together in a group. | ||
+ | #Directress asks: "How many groups of 26 can be made from this number?" | ||
+ | #The child places two tens and six units in a row, continuing his distribution by making all horizontal rows of 26 in a column. | ||
+ | #The stamps are always placed in hierarchic order. | ||
+ | #Here, the skittles serve only as a reminder of the number in the group. | ||
+ | #This time we will first make groups only of tens. | ||
+ | #Groups are made of two tens and lain out in rows. | ||
+ | #Directress asks: "How many groups of ten did I make?" | ||
+ | #"So that each group has 26, I must make the same number of groups of units". | ||
+ | #Groups of six units are made in rows that line up with the groups of ten, yet in a separate column. | ||
+ | #When the child finds that more units are needed, one group of tens is returned to the dish so that they may be changed. | ||
+ | #Directress asks: "How many groups of tens do I have ? 4. How many groups of units? 4 is our answer".<br> | ||
=== Control Of Error === | === Control Of Error === | ||
− | <br> | + | <br> |
=== Points Of Interest === | === Points Of Interest === | ||
− | <br> | + | <br> |
=== Purpose === | === Purpose === | ||
− | <br> | + | *To learn the concept of group division. |
+ | *To continue towards further abstraction in division.<br> | ||
=== Variation === | === Variation === | ||
− | <br> | + | <br> |
=== Links === | === Links === | ||
− | <br> | + | <br> |
=== Handouts/Attachments === | === Handouts/Attachments === | ||
− | <br> | + | <br> |
[[Category:Mathematics]] | [[Category:Mathematics]] |
Revision as of 04:55, 2 July 2009
Contents
Age
7.
Materials
- Stamp Game
- Work Cards
Preparation
Presentation
- Given a division problem, the child prepares the stamps and the skittles.
- Since we want to do a group division, we put the skittles together in a group.
- Directress asks: "How many groups of 26 can be made from this number?"
- The child places two tens and six units in a row, continuing his distribution by making all horizontal rows of 26 in a column.
- The stamps are always placed in hierarchic order.
- Here, the skittles serve only as a reminder of the number in the group.
- This time we will first make groups only of tens.
- Groups are made of two tens and lain out in rows.
- Directress asks: "How many groups of ten did I make?"
- "So that each group has 26, I must make the same number of groups of units".
- Groups of six units are made in rows that line up with the groups of ten, yet in a separate column.
- When the child finds that more units are needed, one group of tens is returned to the dish so that they may be changed.
- Directress asks: "How many groups of tens do I have ? 4. How many groups of units? 4 is our answer".
Control Of Error
Points Of Interest
Purpose
- To learn the concept of group division.
- To continue towards further abstraction in division.
Variation
Links
Handouts/Attachments