Mathematics Stage 4

Mathematics Stage 4

Name: ______

Background

In class you have been learning about ratios and how they can be applied in real life. In this task, you are required to do the following:

1.  Use the ratio skills you have learnt to modify a caramel slice recipe

2.  Determine the size of each piece of caramel slice that needs to be cut

3.  Make your modified recipe

Task 1: Determining the size of each piece of caramel slice

The caramel slice recipe will be modified in two different ways because two different size trays will be used. Below are the details for each tray.

TRAY 1

·  Size of tray is 30cm by 20cm

·  Modify the recipe to make 40

TRAY 2

·  Size of tray is 32cm by 24cm

·  Modify the recipe to make 48 slices

a)  Write down which tray you have been allocated by your teacher.

______

b) Using the information for your tray, work out the size (length and width) that each piece of caramel slice will need to be cut. Show all your working out including any diagrams.

Task 2: Modifying the recipe

In the space below, write the title of the recipe, the ingredients and the quantity of each ingredient.

For each of the ingredients in your recipe, use the space provided to modify that ingredient so that it makes the required number of slices for your tray. Show all your calculations.

Caramel Slice

Makes: 30

Ingredients:

·  120 g butter

·  1 tbs golden syrup

·  3 tbs brown sugar

·  3 tbs condensed milk

·  250 g biscuits

Method:

STEP 1 Crush biscuits minus 3-4 and set aside.

STEP 2 Mix together butter, golden syrup, brown sugar and condensed milk.

STEP 3 Microwave for 2-3 minutes at 30 second intervals until mixture is hot and bubbling.

STEP 4 Add crushed biscuits.

STEP 5 Press into slice pan to set.

Teacher Ingredient List

4 groups making Tray 1 – 4 x 40 slices = 160 slices

Butter 160g x4

Golden syrup 1 1/3 tbs (1.3) x4

Brown sugar 4tbs x4

Condensed milk 4tbs x4

Marie biscuits 333 1/3g x4

Milk chocolate 333 1/3g x4

Cream 4/9 cup (0.44) x4

3 groups making Tray 2 – 3 x 48 slices = 144 slices

Butter 192g x3

Golden Syrup 1 3/5 tbs (1.6) x3

Brown sugar 4 4/5 tbs (4.8) x3

Condensed milk 4 4/5tbs (4.8) x3

Marie biscuits 400g x3

Milk chocolate 400g x3

Cream 8/15 cup (0.53) x3

FINAL QUANTITIES TO BE ORDERED:

250g blocks of butter x 7 (1 per group)

Golden syrup x 1 500g jar or squeezable (groups can share)

Brown sugar x 1 500g or 1kg bag (groups can share)

Condensed milk x 2 395g can sweetened condensed milk (groups can share)

Marie biscuits x14 250g Arnott’s Plain Marie (2 packets per group – 7 groups)

Milk chocolate x14 250g Milk cooking chocolate (2 blocks per group – 7 groups)

Cream x7 300mL Bulla thickened cream (1 per group)