## Inequalities

06/09/2010

7 Comments

At first, students could not think of any examples of inequalities in real life. With an example of  children as age < 13, however, they were soon off to name several. We even had a few fun digressions as we explored some "stories" behind the examples. Here are some of them:
1. speed > 40 at school zones is speeding - somebody told a story of her granddad being booked for driving too slow (concept of minimum is important, too)
2. senior age > 50, it brought a discussion that this is too young
3. marrying age >= 16, too young again
4. 13 <= teen <= 19
5. wins > 4 to qualify to next debating round - and a nod to one of the members of the debating team!

It soon became clear that inequalities are just as present in real life as equations are.A quick revision of step graphs showed the students that they have also seen the graphing of inequalities before.

Students were again reminded of the guiding principles regarding working with equations with the addition of:
• with inequalities, multiplying or dividing by a negative number means reversing the sign

I believe the constant focus on the big picture with regards to equations is starting to pay off as the students are working more confidently.

## Comments

12/30/2011 09:03

good post

01/27/2012 10:37

Good post dude

03/23/2012 12:57

Great info, thanks

03/26/2012 17:46

Thanks for details

04/24/2012 20:50

you may be right on an publish

05/09/2012 09:51

is quickly

07/16/2012 19:20

Good info dude

## Author

I am the 8MATE2010 teacher as well as an ICT integrator. I use technology to facilitate learning with a social bent and realistic context, where possible.

Mrs Mawby

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