This A-level tutorial video follows on from the the distance, speed and time video.  It looks at the terms displacement and velocity and how they differ from speed and time.  An example of a displacement / time and velocity / time graph is given and discussed.  A...

With this a-level video tutorial, the presenter talks about how we get the equation speed = distance / time and then looks at the differences between a distance / time and a speed / time graph.  It also demonstrates what the area under the graph represents as well as the gradient.  This can be followed by the...

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 centre of the carousel against time. Whilst the person is spinning on the carousel the resulting graph shows that distance is constant. This story can be used as...

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....

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’...

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...

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This video asks people if they believe cell phones can cause cancer.  It then considers the available evidence logically, that is types of radiation emitted by a cell phone (non-ionising) and the power rating to conclude that the radiation should not be harmful. However, recent evidence suggests that heat-shock...

This resource provides a set of videos and a practical investigation aimed at supporting working scientifically in the classroom and relating science to real world experiences. In the first video Professor Brian Cox joins a teacher to find out how to set up and run an investigation to find out if plants need soil...

Video from the Big Picture issue on Fat, showing an experiment to discover if we favour fatty foods.

This video demonstrates how applying pressure to ice melts it, yet on removal of the pressure the ice re-freezes.  This is called regelation.