Saturday 8 October 2011


Montessori Activity: Static Addition with Lego Brick Number Rods

Age: From 3 years old

Activity Duration: 5 - 15 minutes

1. To teach the concept of addition

1. Numeral cards 1 - 10

2. Number rods made of Lego bricks

3. Mathematical signs magnets (if not, you can draw and make your own + and = signs)

1. Place the number rods horizontally in front of your child in the order of a staircase.

2. Say, "I am going to show you how to do addition using the number rods.

3. As your child to find rod 2 and put the corresponding numeral card below it.

4. Ask your child to find rod 3 and put the corresponding numeral card below it.

5. Ask your child to use his finger to count carefully each section of the number rod. When he gives the answer "five", explain that 2 + 3 = 5 and insert the "+" and "=" sign into the right location.

6. Let your child try with other combinations.


You can buy the number magnets and the symbols from Amazon:


  1. in 2nd picture u have 4 bricks and number 3

  2. You have so many awesome LEGO activities, Elaine! What fun it was just to look through them all! I featured your post and photo in my Free LEGO Printables and 70+ LEGO Learning Activities post at


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