OUR FAVOURITE HERO RETURNS!

Who had 30 reasons to visit us today?

ZERO - our favourite counting hero!

He brought us a special gift of coloured matchsticks to help us to practise bundling groups of 10.

For our DAY 30 investigation, ZERO had packets of jellybeans for us and two questions:

1. How many ways, besides in ones, can you count to 30?
2. Is your packet of jellybeans the same as mine?

First we used the 'base 10 boards' to count out 30 jellybeans.

We found we could count in TENS - 10, 20, 30 and FIVES - 5, 10, 15, 20, 25, 30 and TWOS - 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30.
Along the way, we made this discovery:



The second part of our investigation is still continuing, as we had to ask MORE questions.

The packages look the SAME and the weight on the pckage says 375 grams BUT...

Does each packet have the same colours in it?

Is there the same number of each colour in each packet?

Are all the jellybeans the same size?

Does each packet have the same total number of jellybeans?

We PREDICTED that each packet would NOT be exactly the same.

To test our theory, used the 'base 10 boards' to sort and count out each colour.

Each group now knows what colours are in their packet and how many of each colour there is.Tomorrow we will graph our results and compare. Will our PREDICTION be correct?