Lost an electron? You should keep an ion them. Young chemists learn qualitative analysis in the second lesson plan of an 11-part chemistry series. After observing reactions of simple salts, the teacher provides pupils with unknown...

The best part of learning about equilibrium is that nothing changes. Young chemists observe four demonstrations during this instructional activity: equilibrium in a saturated solution, equilibrium with an acid-base indicator, equilibrium...

Wouldn't it be great to work in a candy factory? Learners get their chance as they first design a carton for a candy that meets certain requirements. They then examine and analyze nets and explanations in sample student responses.

Have you ever wanted to build a conductor? Here is a lesson that takes pupils through building a conductor based on Drude's model in order to better understand electricity.

Notation in mathematics can be intimidating. Use this lesson to expose pupils to the various ways of representing a function and the accompanying notation. The material also addresses the importance of including a domain if necessary....

Connect the size of a rolling cup to the size of circle it makes. Pupils view videos of cups of different sizes rolling in a circle. Using the videos and additional data, they attempt to determine a relationship between cup...

Can you add variables if you don't know their value? Using an empty number line, scholars first locate the position of the difference, sum, product, and quotient of two unknown integers. Later problems mix operations as well as add...

Sixth graders analyze expressions and equations. For this algebra lesson, 6th graders write algebraic sentences and solve for an unknown in a one-step equation. This lesson uses the formulas for the perimeter of a square and rectangle as...

In this Algebra I worksheet, 9th graders explore the basic of beginning algebra:  the order of operations, integer operations, translating phrases and sentences, and solving basic one-step equations.  The six page worksheet...

In this factoring worksheet, 7th graders solve and complete 20 different problems that include rewriting the expression. They rewrite each expression shown by factoring. Students determine the common factors in each of its terms. Then,...

Pupils explore the concepts of commutative, associative, and distributive properties. In this beginning algebra lesson, students discuss the terms "commute", "associate", and "distribute" and how they correlate with the related...

In this mathematical expressions worksheet, students solve 6 different problems that include deciphering various sets of numbers. First, they use any known mathematical operation or symbol in each to create the number 15. Then, students...

In this combining like terms activity, 9th graders solve and complete 10 different problems that include like terms. First, they identify the like terms in each equation. Then, students add all like terms together, making sure that they...

Ninth graders investigate the concept of relations and interpret graphs and tables. They analyze given data and look for a pattern to determine if the numbers represent a function. Students practice solving scientific word problems that...

In this Algebra I activity, 9th graders use the order of operations to evaluate numerical expressions containing parenthesis and brackets.  The one page interactive activity contains instruction, worked examples and ten practice...

Student use mental math to solve linear equations. In this algebra lesson, young scholars solve one and two steps equations. They write expressions using variables to identify the unknown.

In this distributive property worksheet, students simplify 36 expressions.  Students add and multiply variables using the distributive property.

Students change verbal expressions to algebraic equations. They practice the vocabulary of algebraic equations.

In this algebra worksheet, students solve equations through substitution and then solve for an unknown. They simplify division equations containing exponents and two variables and solve radical problems. This worksheet contains a...

In this middle school mathematics activity, students simplify expression with signed numbers and evaluate expressions for the given value of the variable. The one page activity contains twelve problems. Answers are not provided. 

In this practice exit exam, high schoolers complete a variety of basic algebra problems on an Algebra I skill level. They simplify expressions containing variables, factor quadratic equations, find the slope of a line, identify the...

In this limit worksheet, students review limits stated as an expression, analyze Euler's method applied to a rate equation, compute the terms of a given sequence, and identify a sequence as a convergence or divergence. this four-page...

Students explore Literal Equations. In this literal equations lesson, students use the Internet to connect to links and solve linear equations. Students investigate, analyze and record their findings on various activity worksheets.

For this polynomial equations worksheet, students evaluate roots and draw vector representations. This three-page worksheet contains four problems.