# 2 Digit Window Frame

This idea started life as a way to get children to generate 'random' 2 Digit numbers. We had used dice, we had used Digit Cards, but I wanted something different.

This is what I came up with, a 10 by 10 grid of numbers and small card with a rectangular hole in it.

The rectangular hole (the Window Frame) is sized to match two adjacent squares on the 10 by 10 grid. The children drop the Window Frame down anywhere on the grid to instantly show a 2 Digit number.

Alternatively, you can assess the children's understanding by asking them to look carefully at the 10 x 10 grid, locate a specific number and then "Frame it".

As an assessment tool
Children respond to prompts by placing the Window Frame on the 10 x 10 grid...

• “Can you find me.... ?“
• “Can you find a two-digit multiple of 2?”
• “Can you find a two-digit multiple of 5?”
• “What is the largest two-digit number you can find?”
• “What is the smallest two-digit number you can find?”
• “Show me a two-digit number, and partition it”
• “Show me a number that is more than 30 but less than 60...”

Calculation
You can also use the Frame and 10 x 10 board to help children develop mathematical skills with rounding, bonds to 100, factors and addition and subtraction calculation.

There are two pdf files* below; the 10 x 10 grid and Window Frames (A4), and a separate file with teacher notes and further ideas.

Note: This resource has now been extended to include numbers with 2, 3, 4 and 5 digits! See the 5-digit Window Frames resource for more details.

* If you cannot see the Attached file below, remember that you need to Login/Register first.

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## Comment viewing options

### This is an amazing resource!

This is an amazing resource! It's so good to find a new resource that has so many uses. I will be using this for my mental starters this week once I have it made up. Thank you!!!
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### This is great,  makes a

This is great,  makes a change from creating 2 digit numbers with dice and I'm sure my class will love it!
0 users have voted.

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### A great way to generate 2

A great way to generate 2 digit numbers but even better to use it with the assessment ideas. Thanks.
1 user has voted.

### another fab idea! so simple

another fab idea! so simple but effective!
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### Another

Another brilliantly simple idea. I have just browsed through your place value resources with my blank maths plan open and have been able to fill in nearly all the boxes with exciting ideas and games that the children are going to love! Thank you again and please keep adding new resources.
1 user has voted.

### Great - no more digit cards

Great - no more digit cards and dice on the floor!
0 users have voted.

### Great maths idea! Hi, I'm

Great maths idea! Hi, I'm from Australia. Found your fabulous resources when searching for a Gattegno grid & joined immediately! Thank you for high quality and practical resources. Will be recommending to teacher-friends here ;-)
1 user has voted.

### Saves me writing on lots of

Saves me writing on lots of dice!
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### Excellent resource-manymany

Excellent resource-manymany  thanks! Cant wait to use it!
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### A lovely game for the

A lovely game for the classroom!
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### Thank you! I can see so many

Thank you! I can see so many concepts being covered with this resource.
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### What wonderfully engaging

What wonderfully engaging ideas! I have spent so many wasted hours parping on with number cards - these are the way forward!!
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### Going to use this tomorrow

Going to use this tomorrow for numbers count.
1 user has voted.

### So will I!This will be an

So will I!This will be an invaluable resource in my KS1 class- we'll be looking for odd and even numbers tomorrow with our thinking partners.
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### this should be useful thanks

this should be useful thanks
0 users have voted.

### Great ideas and great

Great ideas and great activities. A blessing in the class!
0 users have voted.

### Excellent resource -

Excellent resource - accessible to so many levels. Many thanks.
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### I am so busy printing and

I am so busy printing and laminating all these great activities. Can't wait to share them with my class and the other first grade teachers.
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### Used this today with a group

Used this today with a group of 6 year olds and they loved it - we were hunting 2 digit numbers and it kept them engaged for ages. Great resource - thanks!
2 users have voted.

### Fabulous resource. What a

Fabulous resource. What a great idea!!
1 user has voted.

### Such quality resources to

Such quality resources to really capture the chidrens interest. Thanks
1 user has voted.

### OMG, what a find! I can't get

OMG, what a find! I can't get over the quality of resources here! Without a doubt, the best maths resource site I have found. I will be spreading the word! Thanks John :)
2 users have voted.

### Great resources. cant wait to

Great resources. cant wait to use them
0 users have voted.

### Thank you for your kind words

Thank you for your kind words - we are a little busy here at the moment, but there are more ideas and resources on the way... so keep watching this space. Cheers.
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### This is a great resource. The

This is a great resource. The children used it to pick 2 numbers for a find the difference lesson, which was also an observation, and they were well received. Excellent resource for independent working. Also I have spread the word about your site to some people at school... they love it!! :)
2 users have voted.

### My class loves anything new I

My class loves anything new I give them that they can play with as they work, these went down a treat! The teacher's notes gave me loads of good ideas I wouldn't have thought of myself too, thanks!
2 users have voted.

### These are a simple but clever

These are a simple but clever idea! My pupils always choose 'easy' numbers when asked to generate them for their own calculations - this is a good way of stopping this! Thank you. :)
2 users have voted.