Units & Time: WJEC GCSE Foundation June 2023 Unit 1 Q6

Foundation June 2023 Unit 1 Q6

WJECFoundationCurrent spec6 marksUnits & Time Using a Calculator / BIDMAS

6. In this question, you will be assessed on the quality of your organisation, communication and accuracy in writing.

Rod A and Rod B are drawn accurately below.

Two rods drawn accurately: Rod A is the longer rod, Rod B the shorter rod

On screen this diagram may not be shown at actual size. To measure it, use the question paper (PDF) printed at 100%.

Three of Rod A and four of Rod B are placed end to end in one straight line.
What is the total length of these rods?
You must show all your working. [4 + 2 OCW]

Mark scheme

Scheme	Marks	Comments
(Length of Rod A =) 5 cm AND (Length of Rod B =) 2 cm	B1	Allow tolerance of +/- 2mm for every measurement throughout. Allow measurements throughout in mm. May be implied in further work
(3 x Rod A + 4 x Rod B =) 3 x 5 + 4 x 2 (= 15 cm + 8 cm)	M2	FT ‘their 5 cm’ and ‘their 2 cm’. Award M1 for sight of (3 x Rod A =) 3 x 5 OR (4 x Rod B =) 4 x 2
(Total length =) 23 (cm) or 230 (mm)	A1	A0 for 230 cm or 23 mm.
Organisation and Communication Labels describing statements Conclusion	OC1	For OC1, candidates will be expected to: present their response in a structured way explain to the reader what they are doing at each step of their response lay out their explanation and working in a way that is clear and logical write a conclusion that draws together their results and explains what their answer means
Accuracy in Writing Clear calculations Units in final answer Correct mathematical form	W1	For W1, candidates will be expected to: show all their working make few, if any, errors in spelling, punctuation and grammar use correct mathematical form in their working use appropriate terminology, units, etc

Alternative

Alternative measurements using inches (in)

Scheme	Marks	Comments
Length of Rod A =) 2 in AND (Length of Rod B =) 0·8 in	B1	Allow tolerance of +/- 0·1 in for every measurement throughout. May be implied in further work
(3 x Rod A + 4 x Rod B =) 3 x 2 + 4 x 0·8 (= 6 inches + 3·2 inches)	M2	FT ‘their 2 in’ and ‘their 0·8 in’. Award M1 for sight of (3 x Rod A =) 3 x 2 OR (4 x Rod B =) 4 x 0·8
(Total length =) 9·2 (in)	A1

The scheme prints this alternative in italics.

The scheme prints this alternative before the OC1 and W1 rows; OC1 and W1 apply to either method.

Corrected by Westie's Workshop

The board's mark scheme printed “FT ‘their 2 in’ and ‘their 0·9 in’”. Changed to “FT ‘their 2 in’ and ‘their 0·8 in’” because Rod B is 0·8 in in this row (4 x 0·8 = 3·2 inches), matching ‘their 5 cm’ and ‘their 2 cm’ in the centimetre row.

Original: see the board's mark scheme PDF (link above).