Halve It

A Maths Starter Of The Day

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Start with 512

Halve it to get 256

Halve it to get 128

- - -

Continue as far as possible

[Decimal fractions are allowed but calculators are not]


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Topics: Starter | Arithmetic | Number

  • Teacher - to - be, England
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  • I like this.. maybe give a few more numbers and get them to practise. Then try doubling.
  • 7abM2, King Alfred's College, Oxfordshire UK
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  • We found this a challenging puzzle. But in the 5mins we managed to write 27 numbers. Can you beat this?
  • Class 9Ma1, Sheredes School
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  • We discussed this and Stefan noticed that all the numbers ended in 5. We had a discussion and then further noticed that the numbers ended in 125 and 625 in rotation. The class wondered why this should be the case.

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This starter has scored a mean of 3.2 out of 5 based on 282 votes.


Previous Day | This starter is for 9 March | Next Day

 

Answers



Casio Classwiz Calculator

There is currently a lot of talk about this new calculator being the best in its price range for use in the Maths classroom. The new ClassWiz features a high-resolution display making it easier to view numerical formulas and symbols but it isn't a graphical calculator as such (it has the capacity to draw graphs on your smart phone or tablet, via a scannable QR code and an app).

As well as basic spreadsheet mode and an equation solving feature you also get the ability to solve quadratic, cubic or quartic polynomial inequalities and the answer is given just as it should be written down, using the correct inequality symbols!

This calculator has a high-performance processor and twice the memory of previous models ensuring speedy operation and superior computational power.more...

Online Maths Shop

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=March9

Here is the URL which will provide a little light relief. It is a game based on the sequence of doubling numbers but might be best left till the last five minutes of the lesson as it is quite addictive!

Transum.org/go/?to=doubletake

Student Activity


Apple

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