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Height of waist off ground 2

A person is shown on a swing. They swing back and forth at a constant rate and reach. After several swings, the person jumps off the swing and comes to rest. The challenge is to graph the height of their waist against time. The resulting graph is parabolic and periodic with a constant section at the end.

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Height of waist off ground 1

A person is shown climbing to the top of a playground slide. They pause at the top and then slide down the slide.  The end of the slide has an upwards turn for safety. The task is to graph the height of the person’s waist off the ground against time.

Height of waist off ground 1 video

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Height

A tennis ball is dropped from a height of 3 feet. The ball is shown bouncing on the ground. The challenge is to graph the height of the tennis ball against time. The resulting graph is parabolic with the amplitude showing a decrease each time.

Height video

Balloon length

A balloon is being blown up by a person. Between blows, the person pauses. As time progresses the person takes longer pauses and shallower blows. At the end, the air is released from the balloon. The challenge is to graph the length of the balloon against time.

Balloon length video

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Water volume

A measuring cylinder is shown with divisions marked in millilitres. Water is poured at a constant rate into the cylinder. The challenge is to graph the volume of water against time. The resulting graph is linear.

 

Water volume video

Distance from the home plate

A player is shown on a baseball pitch. They run around the bases before returning to the home plate. The speed varies between the different bases. The task is to draw a graph of the player’s distance from the home plate against time. The graph shows linear piecewise sections.

Distance from the home...

Distance from the camera

A person is shown spinning around on a playground ‘carousel’ before getting off and walking away. The task is to graph the distance of the person from the camera against time. The resulting graph has periodicity and non-linear elements. This story can be used as a complement to ‘Distance from centre of carousel’...

Distance from the bench

A person is shown exercising using weights whilst lying on a bench.  As the weight is lifted the arms of the person curl around, so that the distance from the bench is not linear with time. As the exercise progresses it takes longer to do each bench press. Finally the weights are placed back on the resting stand....

Elevation

A person is shown rolling down a hill, pausing, and then running back up the hill. The task is to draw a graph of their elevation against time. The graph contains increasing, decreasing, and constant sections.

Elevation video

Air pressure

The video shows air being pumped into an American football using a hand pump. The person using the pump pauses part way through to press the ball in order to check the pressure. They then continue until a final check is made and the ball is seen to be at the correct pressure. The challenge is to graph air pressure...

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