Fun Investigations - 1st and 2nd Grades

Biscuit Decorations

Andrew decorated 20
20 biscuits to take to a party.

He lined them up and put icing on every second biscuit.

Then he put a cherry on every third biscuit.

Then he put a chocolate button on every fourth biscuit.

So there was nothing on the first biscuit.

How many other biscuits had no decoration? Did any biscuits get all three decorations?

http://nrich.maths.org/154/note

The grid method of multiplication

The grid method is a way of teaching multiplication that is used in primary schools. Pupils move on from an array to the grid method. It is also used for teaching times tables. 

Would you like to read more about it? Check this webiste:

http://www.mumsnet.com/learning/maths/grid-method-explained