Eighth Grade

THE

NUMBER

SYSTEM

EXPRESSIONS

AND

EQUATIONS

8TH

GRADE

FUNCTIONS

8TH

GRADE

GEOMETRY

STATISTICS

AND

PROBABILITY

The Number System

Square Roots & the Birth of Sticky Math

by David Mattoon | Feb 1, 2020 | 8th Number System, About

This post explores the concept of square roots, engaging around preconceptions, reengaging around misconceptions, as well as the birth and benefits of Sticky Math.

Perfect Square

David Mattoon

Square Roots

David Mattoon

Squares & Roots

David Mattoon

Solving Simple a Quadratic

David Mattoon

Sq. Rt. Matching A

David Mattoon

Sq. Rt. Matching B

David Mattoon

Venn Diagram

David Mattoon

Sq. Rt. Matching 1

David Mattoon

Sq. Rt. Matching 2

David Mattoon

Sq. Rt. Matching 3

David Mattoon

Expressions & Equations

Rate of Change

David Mattoon

Rise over Run

David Mattoon

Change in y over Change in x

David Mattoon

Slope Formula

David Mattoon

Functions

Which One & Why?

by David Mattoon | Feb 16, 2020 | 6th Expressions & Equations, 7th Expressions & Equations, 8th Functions, HS Functions, HS Structure

Another way to use Sticky Math, which emphasizes constructing a viable argument and provides an opportunity to critique the reasoning of others (MP3).

Negatives in a Slope Fraction

by David Mattoon | Jan 12, 2020 | 8th Functions

These stickies continue to explore slope intercept form; however, the emphasis is on negative slope. It also includes a double negative slope as a comparison. Conceptual understanding can built by examining verbal descriptions in a context.

Slope Intercept Form

by David Mattoon | Jan 11, 2020 | 8th Functions

Do students understand that the algebraic representation of function and the graphic representation are the same things? Do they understand the concepts of slope and intercept? How does the placement of the negative sign influence its meaning?