Numbers are real things, except when they are not. Open the presentation to see what I mean.

Grade 8 2 (A) extend previous knowledge of sets and subsets using a visual representation to describe relationships between sets of real numbers

Grade 8 2 (B) approximate the value of an irrational number, including π and square roots of numbers less than 225, and locate that rational number approximation on a number line

Grade 8 2 (D) order a set of real numbers arising from mathematical and real-world contexts

Algebra I 1 (A) simplify numerical radical expressions involving square roots