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学生说明
1 Click 
2 Click :view: to look at the example
3 Use the 
and 
tool to fill in the missing numbers on the number lines.
4 Use the 
tool to record yourself reading each number line - if you see any mistakes correct them with a different colour
5 When you have completed all the pages click 
教师备注（学生不可见）
Children will use the tools to complete number lines to 20 using the pen or label tool. Ask the children to check their own work and correct in a different colour if necessary. This activity is designed to support white rose maths spring term of year 1
