Page 59 - 新思维数学学生用书7 样章

2 Expressions, formulae and equations

The method I am
going to use is to first show
each inequality on a number line.
Then I can easily see which green
and blue rectangles I need to
join with each inequality.

g Use Arun’s method to answer the question.
h Critique Arun’s method by describing the advantages and
disadvantages of his method.

i Can you improve his method or suggest a better method?

Summary checklist

I can understand open inequalities.

I can draw open inequalities.

58
58