In this inequalities learning exercise, 9th graders solve and complete 18 different types of problems. First, they use systems of 2 equations/2 unknowns to solve each word problem shown. Then, students graph each and identify the vertex...

Students estimate the pH based on the use of an unknown substance, determine whether an unknown substance is acid, base or neutral, and evaluate, by the pH determination, which of the unknowns is the strongest acid or base.

Pupils investigate shapes and patterns. In this algebra lesson, students move from concrete to abstract understanding of shapes and concepts. They use variable to identify the unknown.

Learners explore how to show evidence of subshells and electron filling on the visual scale. They examine subshell filling and evaluate unknowns based on the atomic emission spectrum. Students design an experiment to identify colors of...

In this Algebra I worksheet, 9th graders solve equations by using the concept of a scale where unknowns are represented by cylinders and numbers by marbles.  The four page worksheet contains ten problems.  Answers are not...

Young scholars place a peat pot in water to observe and calculate the rate of capillarity in a model of a soil. This task assesses students' abilities to make simple observations, collect, record, and represent data, use a data table to...

Students are given three unknown samples and must perform two chemical tests in order to determine if the samples contains protein and/or starch. Students work with corrosive or toxic reagents.

In this algebra worksheet, high schoolers 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...

Students explore chemical solutions. In this chemistry lesson, students investigate the relationship between three related experiments about solutions. Students determine variables that affect the chemical concentration of each solution.

In this systems of equations worksheet, 9th graders solve and complete 19 different problems. First, they solve each of the given equations. Then, students set the equations up in standard form and enter the coefficients of x and y. They...

Students solve linear equations using multiple steps. In this algebra instructional activity, students solve linear equations using division, addition, multiplication and subtraction. They isolate the variable and solve for the unknown.

In this colinear points worksheet, students solve 4 short answer problems. Students find unknown values of x using properties of colinear points. Students set up and solve equations given colinear points and variable lengths.

Students compare two cell phone providers and relate those concepts to motion. In this algebra lesson, students identify the unknown in a problem using variables. They calculate the velocity, motion and displacement of different objects.

Students gain knowledge by measuring time and distance for solving unknowns in an equation. They also will design an airplane and chance to communicate mathematically by writing essays.

Eighth graders design and perform an experiment that uses a Universal Indicator Color Guide to measure the strength of acids and bases. They also determine happens when acids and bases are mixed together. They decide which of three...

Sixth graders analyze expressions and equations. In this algebra instructional activity, 6th graders write algebraic sentences and solve for an unknown in a one-step equation. This instructional activity uses the formulas for the...

Eighth graders experiment what happens when acids and bases are mixed together. In this acids and bases experimental lesson, 8th graders decide which of three solutions of unknown pH will neutralize a fourth solution of unknown pH.  

Young scholars devise a strategy to solve problems that is done in a systematic and mathematical fashion. The finding of the unknown value is the focus of the lesson. To solve linear equations proficiently is the skill of the lesson.

For this radiation worksheet, students use a data table to determine what kind of radiation is being emitted by unknown sources. This worksheet has 3 problems to solve.

Students use a machine called a spectrophotometer to determine how much light is absorbed by certain substances. Students record the absorbance and the % of light transmitted for different color solutions, graph their results, and then...

In this algebra worksheet, students work in order to perform the operation of subtraction in ten problems. They could also be introduced to addition of the opposite values.

Students determine a spring constant and extrapolate information from a graph.  In this spring lesson students divide into groups and complete a lab activity. 

Rolling for momentum. As part of a study of mechanical energy, momentum, and friction, class members experiment rolling a ball down an incline and having it collide with a cup. Groups take multiple measurements and perform...

Every knows that opposites attract! Here's a presentation that uses this background knowledge to explain magnetic fields and forces. The resource also explains the shape of magnetic fields and how to determine the direction of forces.