Multiplication and Division – arrays

Warm up

Write the number 10 on the board Turn and talk to a partner – tell them 2 things about this number (demonstrate that it could be anything “it has a straight number and a curvy number, it has one ten and zero units, or, you can make 10 by doubling 5” etc.

Launch

Multi-Level car park Video

https://www.youtube.com/watch?v=eqo-IpF7Rac

What vehicles can use this car park? Create a list. How many wheels do each have?

Explore

Discuss Multi-level car park prompt. In this car park there are many levels. 

Motorbikes only park on level 1. 

Trucks park on level 2.

Cars park on level 3 and buses park on level 4. 

There were a different number of wheels on each level. There are 20 wheels on level 1. If motorbikes have 2 wheels then how many motorbikes might be in the carpark? 

Show me your workings by drawing  a picture, making a model, using a table etc of the vehicles. 

For example

level 1 = 20

level 2 = 60

level 3 = 24

level 4 = 30

What could be on level 5? How many wheels/vehicles?

Enable/Extend

ENA: Solve a simpler problem (6-10 wheels) 

EXT: change numbers to suit eg 36 wheels. Go over strategies. Will there be remainders? No Why? All vehicles need wheels to move around