Solving Simultaneous Equations: Probing Questions
Whether you are looking for a question to stimulate discussion in lesson, or a challenge at the end of a homework, then hopefully you will find these useful.
Contents
Convince Me That... keyboard_arrow_up
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I use Convince Me That questions lots in my lessons and homeworks. Providing students with a statement and challenging them to come up with as many different ways of convincing you as possible can lead to some fascinating discussions. The different ways of seeing the same thing can also help improve the depth of students’ understanding. Thanks so much to the Thornleigh Maths Department, in particular Erica Richards, Anton Lewis and Gareth Fairclough for helping me put these together, and we will endeavour to keep adding more!
You know when to add and when to subtract simultaneous equations
You get the same answer to simultaneous equations if you make the x's or the y's the same
You can work out the solution to simultaneous equations from the graph of the functions
Some simultaneous equations have 0, 1 or 2 solutions
You can check if your answer to a simultaneous equations question is correct
VI3 Treatment keyboard_arrow_up
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We devised VI3 Treatment as a versatile way of giving students meaningful follow-up work at once we have marked their homework. The idea is that students are challenged to come up with 3 things with certain constraints. These are ideal to use as an extension for students who have got everything correct, and also as further purposeful practise for students who have got a particular question wrong. Use the ideas below and adapt them accordingly, using different numbers where appropriate. Either mark them yourself or better still, get other students to do it. Thanks so much to the Thornleigh Maths Department, in particular Erica Richards, Anton Lewis and Gareth Fairclough for helping me put these together, and we will endeavour to keep adding more!
Pick a simultaneous equations question and
solve it by:
1) Making the x's the same
2) Making the y's the same
3) Substituting the second equation into the first
Make up 3 different simultaneous equations questions that have solutions: x = 3 and y = -2