Number Grid Stencil 1 Stencil 2 Stencil 3

Which of the coloured stencils will fit over the numbered card to produce correct calculations?

Teacher: The stencils can be dragged over the numbered card once the students have had a guess.

Topics: Starter | Arithmetic | Problem Solving

  • Primary 7, Bargeddie Primary School, North Lanarkshire
  • We enjoyed this starter because we found it quick, easy and fun! With all the stencils on, we found that the digits still visible were: 1, 3, 1 and 4...
    13 14 - A very significant year in Scotland as it was the Battle of Bannockburn!
  • Jake Bridges, UK
  • This was quite interesting and it was also very fun and easy.
  • Transum,
  • It's always interesting to see how each starter scores on the popularity index below. At the time of writing this starter was averaging 4.3 out of 5 which means, relatively speaking, it is a popular starter. Of course these starters are used with pupils of a range of different ages and abilities and hopefully each pupils will get something out of the activity appropriate for their needs. Remember if the Starter of the Day isn't suitable for your class have a look in the topic index to find something more appropriate.
  • Mr Wood, Dulwich College Beijing
  • Blue was correct and green and red were incorrect (Michael)
    I thought it was quite challenging without the stencils on top of the numbers (Brian)
    Dulwich College Beijing.
  • Mrs C, Smithills Bolton
  • Blue is correct 8c1 loved your starter!! Mad Maths from Smithills
    Too easy for Makki!! :).
  • 10b1, Smithills
  • A JUICY starter
    10b1 LOved it!!
    More please
    The blue is correct.
  • Natalia,
  • Excellent starter, my children loved it.

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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Extension question: If all three stencils are placed over the numbered card at the same time, which digits can still be seen?

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Laptops In Lessons

Teacher, do your students have access to computers such as tablets, iPads or Laptops?  This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments:

However it would be better to assign one of the student interactive activities below.

Laptops In Lessons

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

Student Activity


Extension Answers


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