**• Advent calendar designs challenge**

*A printer wants to make rectangle advent calendars with 24 square doors.*

How many different rectangle advent calendars can you make?

Draw rectangles with 24 sqaures on squared paper and write the numbers 1-24 on each square door.

Make other shapes with 24 squares. Can you make the shapes symmetrical?

**• Advent additions**

How many pairs of doors can you find that total 25?

25th December is the date of Christmas day.

Can you find a set of 3 doors that total 25? How many sets of 3 doors total 25?

Investigate other sets of doors (4, 5, 6... doors) that total 25.

**• Christmas Alphabet**

#### 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Use the code to find Christmas decade words that total 10, 20, 30, 40 ...

T U R K E Y is a 'total 100' word

20+21+18+11+5+15

Can you find other 'total 100' words?

**Related articles**

Christmas maths problem solving

The 12 days of Christmas investigations - how many presents altogether?

How many ways can a star be drawn using 2D shapes?

Activities for both KS1 and KS2 using 2D shapes

How much paper is needed to make a parcel?

Make different cuboids with 36 interlocking cubes, how much paper is needed for each one?

Make a paper star for Christmas

Step by step instructions to fold a star with lots of maths

Fibonnaci numbers on Christmas cones

Showing how to count the spirals on a cone - what are the numbers you find?