Expressions & Equations

Have you ever wondered how scientists write huge numbers, like the distance from Earth to the sun? Instead of writing long strings of zeros, they use

Have you ever wondered what happens when you raise a power to another power, like (23)2? This is called “finding the power of a power.” It’s something

In math, exponents help us write repeated multiplication more concisely. You may see exponents when calculating areas, working with large numbers, or

Have you ever seen really large numbers in science or technology? Exponents help us write those numbers more easily. When dividing powers with the sam

Exponents are a way to write repeated multiplication in a short form. For example, 23 means 2 × 2 × 2. Learning how to simplify expressions with expon

In math, exponents show how many times a number is multiplied by itself. Sometimes you may see exponents that are zero or negative. At first, this mig

Have you ever noticed how some roads are steep while others are almost flat? In math, we use slope to describe how steep a line is. Slope helps us und

Have you ever noticed how a road goes uphill, downhill, or stays flat? In math, we use slope to describe how steep a line is. Slope helps us understan

Have you ever compared prices at a store or checked your speed while riding a bike? These situations use unit rates. A unit rate compares two quantiti

A proportional relationship happens when two quantities change at the same rate. Graphing a proportional relationship helps us see how the quantities

Have you ever noticed that some things increase at a steady rate, such as the cost of movie tickets or the distance traveled at a constant speed? Thes

Proportional relationships can be represented in different ways. Two common representations are equations and graphs. Both show the same relationship,

A system of equations is a set of two or more equations that use the same variables. Solving a system means finding values that make all the equations

A system of equations is a set of equations that uses the same variables. Solving a system means finding values that make all the equations true at th

A system of equations is a set of equations that uses the same variables. Solving a system means finding values that make all the equations true at th

A system of equations can be solved graphically by drawing the graphs of both equations on the same coordinate plane. The solution is found by looking

A system of equations can be solved graphically by drawing both equations on the same coordinate plane. The solution is the point where the graphs int

A system of equations can be solved graphically by drawing both equations on the same coordinate plane. The solution is found by looking at where the