# Double Digit Group Division

From wikisori

## 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