?Functional Packing BAA* Work out what you can Work out what you should Can and should together Some ideas and a solution For printing Can/Should Use the information given to Work out what you can. (Question itself not given.) Use after Work out what you can. Gives the question so students can select the working they need. LHS provides ideas for Work out what you can to discuss with students. RHS provides a solution for discussion or checking. Use as an alternative to separate can and should activities when students need less support to unpick the question. Printable in black and white. Fold the RHS under to concentrate on can.  Students could do the can activities on mini-whiteboards. They can then highlight a correct solution to copy neatly into books for the should activities.

?Functional Packing BAA* Three tennis balls, diameter 6.7 cm, are packed in a cylindrical box. Work out what you can. Can/Should – Work out what you can Look at different pairs of numbers. What can you work out from them? What sum gives you that information?

?Functional Packing BAA* Three tennis balls, diameter 6.7 cm, are packed in a cylindrical box. What percentage of the total volume of the box do they occupy? Choose what you should work out to answer the question and write out your solution clearly. Can/Should – Work out what you should Is the solution clear? Is it correct? Will it get the QWC mark?

?Functional Packing BAA* Three tennis balls, diameter 6.7 cm, are packed in a cylindrical box. What percentage of the total volume of the box do they occupy? Work out what you can. Choose what you should work out to answer the question and write out your solution clearly. Can/Should – Can and should together Is the solution clear? Is it correct? Will it get the QWC mark? Look at different pairs of numbers. What can you work out from them? What sum gives you that information?

?Functional Packing BAA* Three tennis balls, diameter 6.7 cm, are packed in a cylindrical box. What percentage of the total volume of the box do they occupy? radius = 3.35 cm surface area of each ball = 4  r² = 141 cm² height of cylinder = 3 × 6.7 = 20.1 cm volume of cylinder =  r²h = cm³ volume of one ball =  r³ = cm³ height of cylinder = 3 × 6.7 = 20.1 cm volume of cylinder =  r²h = cm³ volume of one ball =  r³ = cm³ volume of three = 3 × balls = cm³ percentage= × = 66.7% Can/Should – Some ideas and a solution Did you think of all these ideas? Did you think of any others? Where do you think the marks would be given?

?Functional Packing BAA* Can/Should – For printing Three tennis balls, diameter 6.7 cm, are packed in a cylindrical box. What percentage of the total volume of the box do they occupy? Work out what you can. Choose what you should work out to answer the question and write out your solution clearly.