Sequences
The below QuickQuestion Interface © generates random questions on sequences.
Choose which types of sequences you want to include in the questions (Linear, Quadratic, Cubic or Geometric).
Decide if you want a negative first coefficient (for linear that means descending sequences, quadratic and cubic means a<0 and for geometric it means the sequence will oscilate).
Choose the type of question you would like to appear.
If you want simple examples, then it will either have a constant or a single coefficient.
Finally choose how big you want the coefficients to be.
When typing answers, lists should be separated by commas, powers are written with ^ (ie n^2 is n squared), nth term should use the letter n, and for geometric sequences, the nth term is of the form a x b^(n-1).
Use the buttons to create random questions and show the answers.
There is a 10QQI version of this activity.
Choose which types of sequences you want to include in the questions (Linear, Quadratic, Cubic or Geometric).
Decide if you want a negative first coefficient (for linear that means descending sequences, quadratic and cubic means a<0 and for geometric it means the sequence will oscilate).
Choose the type of question you would like to appear.
If you want simple examples, then it will either have a constant or a single coefficient.
Finally choose how big you want the coefficients to be.
When typing answers, lists should be separated by commas, powers are written with ^ (ie n^2 is n squared), nth term should use the letter n, and for geometric sequences, the nth term is of the form a x b^(n-1).
Use the buttons to create random questions and show the answers.
There is a 10QQI version of this activity.
Ideas for Teachers
The QQI activities are a great way to get all students working. Put random questions on the board, and then get students to answer them on mini-whiteboards. Once all students have answered, and held up their solutions (with working), reveal the answer to see if they were right. Discuss any misconceptions from the working they have shown, or if they have all got it correct, move on to another question (changing the options to make if more difficult if necessary).
The QQI activities are a great way to get all students working. Put random questions on the board, and then get students to answer them on mini-whiteboards. Once all students have answered, and held up their solutions (with working), reveal the answer to see if they were right. Discuss any misconceptions from the working they have shown, or if they have all got it correct, move on to another question (changing the options to make if more difficult if necessary).
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