Popcorn and juice

Popcorn and juice

Pencil and paperOnline interactive
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Further Resources
This task is about solving practical problems with patterns.

Question 1Change answer

Questions/instructions
You and your friend are making popcorn for your class.
You need to work out how many spoons of corn you will need for 36 people. Each person should get a bowl of popcorn.
Spoons
Bowls made
1
2
3
6
5
10
 
a) i)   You see a pattern in the table, but your friend does not.
          Tell your friend how many bowls of popcorn can be made with six spoons of corn.
          Explain how you know this from the pattern in the table.
 
ii)  Think about the pattern.
      How many spoons of corn will you need to make 36 bowls of popcorn? 

Question 1Change answer

b)  i)  The chart below shows that one jug will hold four cups of juice and two jugs will hold eight cups of juice.
Continue the pattern in both rows of the chart until you find the number of jugs needed to hold 46 cups of juice.
Jugs
1
2
3
4
Juice
4
8

Question 1Change answer

ii)  How many jugs will you need for 46 cups of juice?
iii) Explain how you got your answer
Task administration: 
This task can be completed with pencil and paper or online with some auto-marking,
Level:
4
Description of task: 
For this NEMP task students solve practical problems using linear number patterns and use a relationship graph to identify trees by height and width.
Learning Progression Frameworks
This resource can provide evidence of learning associated with within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 

Y8 (09/1997)

a) i)

Correct answer and explanation.
Correct, but vague explanation.
Other

50%
21%
29%

a) ii)

18

61%

b) i)

Jugs

1

2

3

4

5

6

7

8

9

10

11

12

Juice

4

8

12

16

20

24

28

32

36

40

44

48

Chart correct to 12 jugs.
One error up to 12 jugs.

 
 
73%
5%

b) ii)

11 1/2 or 12

64%

b) iii)

Clear, concise explanation.
On right track, but less clear.
Other

50%
21%
29%