Double Trouble

Begin with one, double it, double it again and so on. How many numbers in this sequence can you write down before the register has been called?

1, ...

Doubling piles of jellybeans

A Mathematics Lesson Starter Of The Day


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Topics: Starter | Arithmetic | Number

  • Leah, Shelton Junior School
  •  
  • I did 27 numbers in 5 minutes.
  • Strandtown, Rm 14
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  • 49 in 4mins.
  • Miss O'Connor, 4th Class Dublin
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  • My class hated it they thought it was really boring thats why I only rated it one star.
  • Transum,
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  • Yes it's not the most cryptic, inventive or novel starter but it's a really quick one and an easy activity that has worked for me with classes of all ages and abilities. It panders to the pupils' competitive nature and because the answers appear below it is easy for the teacher to show them so that pupils can check their own working. A fun follow up is for the two pupils who got furthest with their list could have a 'Mental Show Down Final' in front of the whole class. They stand back to back and take it in turns to say the next double (with the rest of the class checking the answers). First to make a mistake comes in second place!

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.
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Excellent, I would like to see more like this
Good, achieved the results I required
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Didn't really capture the interest of the students
Not for me! I wouldn't use this type of activity.

This starter has scored a mean of 3.2 out of 5 based on 387 votes.


Previous Day | This starter is for 4 March | Next Day

 

Answers

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Laptops In Lessons

Teacher, do your students have access to computers?
Do they have iPads or Laptops in Lessons?

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

Laptops In Lessons

Here a concise URL for a version of this page without the comments.

Transum.org/go/?Start=March4

Here is the URL which will take them to a related student activity.

Transum.org/go/?to=doubling

Student Activity

 


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