Explore how electricity splits water molecules into hydrogen and oxygen. Learners begin by calculating the voltage necessary to separate the water. They then perform the experiment and measure the ratio of hydrogen and oxygen bubbles.

Estimate the value of one of the most famous irrational numbers. The hands-on instructional activity instructs classmates to measure the circumference and diameters of circles using yarn. The ratio of these quantities defines pi.

Roll the dice with this activity and teach young mathematicians about probability. Record outcomes for rolling two number cubes in order to determine what is most likely to happen. Graph the data and investigate patterns in the results,...

Here is a hands-on activity where your class members will discover different ways to measure the government's financial situation and work to add data and redraw graphs in order to calculate the ratio of gross federal debt held by...

Use a triangle area formula that works when the height is unknown. The eighth installment in a 16-part series on trigonometry revisits the trigonometric triangle area formula that previously was shown to work with the acute triangles....

Students investigate numerical data on a possible asthma epidemic. Using statistical information, students graph and figure ratios of the epidemic. They evaluate the mortality rate from severe smog in the 1950's in London.

Eighth graders identify that a ratio is a comparison of two numbers and that a proportion is an equation that equates two ratios. They identify the extremes and means of proportions, as well as the product of the extremes equals the...

The student will practice writing ratios as fractions, using poultry-related illustrations as visual representations of the problems.1. Review the definition of a ratio and how to write ratios as fractions. If possible, use groups of...

Learners calculate distance and proportion of objects. In this algebra instructional activity, students define proportion and how it is used in math. They solve the problem through guided instruction.

Students are introduced to the basic trigonometric identities. Using a diagram, they discover why the parts of the unit circle as named as they are and use equations to finalize the Pythagorean trigonometric identities. They also review...

Students use light and shadow information to make inferences regarding the three dimensional shapes of specific objects photographed on the surface of Mars. Limitations of the of the data provided are discussed and entries made into the...

Knowing how to scale a recipe is an important skill. Young mathematicians determine the amount of ingredients they need to make a certain number of truffles when given a recipe. They determine a relationship between ingredients given a...

Sew up your unit on operations with decimals using this assessment task. Young mathematicians use given rules to determine the amount of fabric they need to sew a pair of pants. They must also fill in a partially complete bill for...

Learners separate things that just appear similar from those that are actually similar. A diagram of triangles is given, and then a variety of geometric characteristics changed and the similarity of the triangles analyzed. Because the...

Having a good working knowledge of math vocabulary is so important for learners as they progress through different levels of mathematical learning. Here is 125 pages worth of wonderfully constructed vocabulary and concept review cards....

Learners determine that two figures are similar or congruent by investigating figures that are similar and figures that are congruent. They prove that two figures are similar or congruent by using definitions, postulates, and theorems.

High schoolers build simple gear trains and record data to discover how to compute gear ratios. They investigate the definition of torque and how torque can be increased or decreased in a gear train.

In this algebra worksheet, students divide circles into equal portions as they explore percents and decimals. They convert between decimals and fractions using ratio and proportion. There are 8 questions.

Students investigate angles converting them from radians to degrees. In this trigonometry activity, students work with angles and the six different trig ratios. They graph the functions representing each trig functions and identify the...

In this trigonometry learning exercise, students solve and complete 5 various types of problems. First, they find the exact ratios for each trigonometric function. Then, students use the expansion to find the exact value of a given trig...

Students apply concepts of scales to solve problems. In this geometry lesson, students solve real world problems using scales, proportions and ratios. They predict the actual size of a model given the scale drawings.

Students analyze and interpret maps, globes and geographic information systems to define and identify cities, counties, states, countries and continents to create a booklet called me on the map. They also determine and calculate the...

In this stoichiometry worksheet, students review definitions and equations associated with molarity, density, atomic mass, molarity, and dilutions. This worksheet has 18 word problems.

Students identify different locations on a unit circle. In this precalculus instructional activity, students identify the different trig properties and rewrite the equation of a circle in standard form. They use mnemonic devices to...