# Author - Laura Gallagher

Using Gizmos

## Gizmo of the Week: Number Line Frog Hop

Number lines are fun with frogs! In the Number Line Frog Hop Gizmo, students visualize addition and subtraction as they move a frog towards flies. If the frog...

Case Studies

## Expert Corner: If I only had a [math] brain

How often have you heard someone say, “I’m just not good at math” or “He’s just not a numbers person?” This is a myth, and one that educators need to help...

Using Gizmos

## Gizmo of the Week: Photosynthesis Lab

Plants turn energy from the sun into chemical energy via photosynthesis. The efficiency of this process varies with light intensities, carbon dioxide levels...

Using Gizmos

## Gizmo of the Week: Phases of the Moon

Scientists now have a better idea of how the large craters on the Moon were formed. In particular, the right “eye” of the “Man in the Moon” is now theorized to...

Using Gizmos

## Gizmo of the Week: Equivalent Algebraic Expressions

Last summer, we introduced the Equivalent Algebraic Expressions 1 Gizmo, the first in a series of new algebra Gizmos. These Gizmos differ from our usual Gizmos...

Using Gizmos

## Gizmo of the Week: Hurricane Motion

Hurricane season reaches its peak in August and September. These giant storms, which form in tropical areas, have an unusual structure. As you approach the...

Using Gizmos

## Gizmo of the Week: Biconditional Statements

Everyone knows that baby cats are kittens, but did you know that all kittens are not baby cats? “Kitten” is also used for baby rabbits, foxes, beavers...

Using Gizmos

## Gizmo of the Week: Water Cycle

Where does rain come from? Using the Water Cycle Gizmo, students explore the water cycle by controlling the path of a drop of water as it travels through the...

Using Gizmos

## Gizmo of the Week: Rounding Whole Numbers (Number Line)

Estimating numbers is a difficult subject but is very relevant to everyday life. Suppose you have \$100 and want to buy a shirt (\$29), skirt (\$16), and shoes...