Material developed by Paul Dickinson Steve Gough amp Sue Hough at MMU Thank you Sue Steve and Paul would like to thank all the teachers and students who have been involved in the trials of these materials ID: 623941
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Slide1
Easy To See
Material developed by Paul Dickinson, Steve Gough & Sue Hough at MMUSlide2
Thank you
Sue, Steve and Paul would like to thank all the teachers and students who have been involved in the trials of these materialsSome of the materials are closely linked to the ‘Making Sense of Maths’ series of books and are reproduced by the kind permission of Hodder EducationSlide3
Note to teacher
This section is designed to encourage students to notice that some equations are easy to solve and do not require any complex manipulation to reach a solution. If students can read and make sense of an equation they may have a chance of seeing the solution immediately.
A common teacher strategy is to cover up the unknown part of the equation and ask what number must be underneath.Slide4
Easy to see
Sometimes, when you look at an equation carefully you can see the solution straight away.
For
example, if
x
+
5
=
19, then it must mean that x is equal to 14 (because 14 + 5 = 19). When we can see the solution quickly like this we say the solution is EASY TO SEE.
If x+4=15, what is x?
If x-7=9, what is x?Slide5
Easy to see
The solutions to the equations on the left are all
easy to see
. For each question, write down the value of x.Slide6
Easy to see
When you start to use this method, more equations become
easy to see
.
For example,
if
18-2x=4
,
2x=14
so x=….
Explain the example above
Use the
easy to see
method to solve the equations on the rightSlide7
Easy to see
These equations are slightly more difficult.
However, they are still quite simple if you use
easy to seeSlide8
Easy to see (Summary)
When you look closely, some equations are simple to solve…the solution is “easy to see”.
Putting your finger over the x can often help you find the answer
12-x=7.
In this case, covering up x, the equation is 12 take away something equals 7
32/x = 8.
This reads: 32 divided by what number gives 8?