Both year 8 groups (group 3 & 4) and my year 5 group (group 1) have been working on multiplicative strategies using arrays. Arrays are rows of objects that are used for the children to be able to see groups rather than single objects. The arrays we have been using are animal strips. Each group has started off using the strips to partition (break up) additively then they use multiplication and additive strategies to solve the answer. Using arrays also helps to correct children's misunderstanding of what multiplication looks like i.e. 6 x 3 is 6 groups of 3 whereas 3 x 6 is 3 groups of 6. Though they have the same answer, the arrays look different so using the materials helps clarify this in their minds : )
In the videos below you will see the students explaining their strategy.
What the students are doing:
To solve 27 x 6,
27 is split into 20 and 7 and these parts are multiplied then recombined, as in:
20 x 6 = 120
7 x 6 = 42 (or 7 x 5 = 35 and 7 x 1 = 7)
120 + 42 = 162)
Group 1 (Mya, Heseti, Ripeka, Michael, Sacred)
Group 3 (Paul, Bethel, Teri, Faleupolu, Vera)
Group 4 (Andre, Giovanni, Losana)
Malo lava Bethel and Paul. Paul, I thought you did a great job explaining your mathematical thinking using those arrays so well done! Keep up these great maths conversations!
ReplyDeleteMrs M-Lokeni.
Malo aupito Mya and co. - well done explaining the strategy you used and I thought it was great that you knew the name of the strategy you were using.
ReplyDelete"Aunty"
I am very impressed with the fact that you are all able to explain your thinking in a very clear fashion. Well done, everyone!
ReplyDeleteI agree with Mr Dawson - it is great to hear you all explaining your strategies so clearly. I think arrays are a great way to help us solve multiplication problems. Keep up the great work! :)
ReplyDeleteAwesome work boys. Great to see that you were confident with your strategy Giovanni. keep it up.
ReplyDelete