成人快手

Video summary

Amongst the ruins of an ancient city, Olivia and Hassan learn how to add and subtract fractions.

Archimedes explains how to perform subtraction using the fractions of the ruins and compiling them together, and with this new knowledge they're able to create a beautiful statue of Hypatia, before moving onto the next part of the mathematical maze.

This short animated film is from the 成人快手 Teach series, Hyaptia's Mathematical Maze.

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Teacher Notes

Before watching the film:

Prior to this lesson you may wish to introduce students to other relevant topics, for example:

  • Common factors
  • Common multiples
  • Equivalent fractions and converting

During watching the film:

Depending on your lesson鈥檚 focus, you may wish to pause the film at certain points to check for understanding by asking questions such as:

  • What are the rules for adding and subtracting fractions?
  • Why do we add and subtract the numerators but not the denominators?

Final question:
A chariot travels from the temple to the outpost. In the morning, it completes 虏鈦勨們 of the journey. In the afternoon, it completes 鹿鈦勨倕 of the journey.

What fraction of the journey has been completed altogether? What fraction of the journey is left to travel?

Answer to the final question:Completed: 鹿鈦扳亜鈧佲倕 + 3鈦勨倎鈧 = 13鈦勨倎鈧匧eft to travel: 虏鈦勨倎鈧

Following on from the film:

  • Add fractions using bar models of the relative size.
  • Explore subtraction as difference by giving an open-ended question, e.g. I am thinking of two fractions. They have a difference of 鹿鈦勨倐. What might my fractions be? I.e. 鲁鈦勨倛 and 鈦封亜鈧. 2鈦勨倎鈧 and 鈦封亜鈧佲個.
  • In these examples, can the denominator ever be an odd number?

This short film is suitable for teaching maths at KS2 in England, Wales and Northern Ireland and 2nd Level in Scotland.

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