MATHEMATICS PERFORMANCE TASKS
TASK 22
Lights, Candles Action
Strand: Measurement
Objective: Students will observe, tabulate,
calculate and compare the time taken for
two candles to burn out.
Task Overview: Your friend Abbie is
making a movie. She is filming a fancy
dinner scene and she has two types of
candles on the table. She wants to determine how long the candles will last. She takes a
picture, lights the candles, and then lets them burn for 1 hour. She then takes a second
picture. You can assume that each candle burns at its own constant rate.
Candle Type A initial height = 20 cm
Candle Type B initial height = 10 cm
Candle Type A height after burning for 1 hour = 16 cm
Candle Type B height after burning for 1 hour = 9 cm
You will use this information to help Abbie think about the candles she might use for her
film.
Task 1: Candles A and B are lit at the same time. What will be the height, in cm, of each
candle after 3 hours of burning?
Candle Type A: ...................................................................
Candle Type B: ...................................................................
MATHEMATICS PERFORMANCE TASK 60 CHRISTIE WAINWRIGHT
Perormance Task - Lights Candles Action