## Key stage 2

## Key stage 1

### Objectives

To use knowledge of multiplication problems to help calculate division problems.

### National Curriculum

Ma2, 3f.

### Resources

**Online activities:**- Bitesize division section: play, quiz
- Starship Crossing the Swamp game

**Learning Zone Bradband Class Clips:****Worksheets:****Other resources:**- 10 x 10 times table square or poster
- Whiteboard/individual whiteboards

You will need Adobe Acrobat reader to access the PDF files. BBC Webwise has a complete guide to downloading and installing Adobe Acrobat reader.

### Teaching activities

#### Introduction

- Start by showing the children the problem solving using division clip on multiplications and the corresponding divisions.
- Ask each child to jot down one division fact that corresponds to a times table up to 10 x 10 (eg 42 ÷ 7 = 6).
- Stand in a large circle. Each child takes a turn to ask the person to their right their question. Encourage children who are unsure to use the times table square.
- Time the class and emphasise speed.
- When everyone has had a go, reveal the time. Tell the children that they need to beat this time in the plenary.

#### Activity

**Lower ability** - Working in small groups, ask the children to use their whiteboards to set each other division problems that correspond to the 2, 5 and 10 times tables.

**Middle ability** - Working in pairs, ask the children to use their whiteboards to set each other division problems that correspond to the 10 x 10 times table. Once they are able to answer the problems quickly, they can write their divisions as word problems for each other to solve.

**Higher ability** - Introduce the Bitesize division activity to the children. Demonstrate the 'dividing by 9' programme to the class on the whiteboard. Ask several children to come up and solve the division sums. Encourage them to use the 10 x 10 times table square if stuck. Then play the Starship Crossing the Swamp multiplication and division game.

#### Plenary

- Repeat the circle game from the introduction.
- Encourage the children to answer quickly to beat the time.
- Play again and try to beat the previous time.

#### Extension

Ask the children to work through the Bitesize division quiz or complete the Division worksheet (PDF 86KB) or the Starship Banana Splits sheet.

#### Homework

- Give each child a small 10 x 10 tables grid.
- Ask each child to choose two of the times tables that they are least confident with and to use the grid to write out all of the multiplication and division sums for the times tables they've selected.