Red Lines

A Maths Starter of The Day

 
Either estimate the lengths of the red lines or, if you know how, calculate how long they are.

 

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Keywords: Starter | Estimating | Pythagoras

    How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world. Click here to enter your comments.

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    Not for me! I wouldn't use this type of activity.

    This starter has scored a mean of 3.7 out of 5 based on 26 votes.
     

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    Answers

    1) 3.6 (to 1 dp) 3) 1.4 (to 1 dp)
    2) 4.5 (to 1 dp) 4) 2.8 (to 1 dp)

    Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to reposition the red lines.
    Teacher, do your students have access to computers?
    Do you have "Laptops in Lessons"?

    Whether your students each have a TabletPC or share a desktop PC, this activity lends itself to eLearning (Engaged Learning).

    Here's the URL which will take
    them to short quiz about Pythagoras' Theorem.

    http://www.transum.org/go/?to=Pythagoras