We know that sample data varies — it's time to quantify that variability! After calculating a sample mean, pupils calculate the margin of error. They repeat the process with a greater number of sample means and compare the results.

Learners calculate commission for a stock transaction through a broker using the relationship between percentages and decimals. They decide which stocks are preferable based on the price to earnings ratios listed on the stock market quotes.

Use the power of mathematics to find the number of red chips in a bag — it's a little like magic! The activity asks learners to collect data to determine the percentage of red chips in a bag. They calculate the margin of error and...

After viewing a video on fractional amounts, young mathematicians put their new knowledge to the test. Throughout the assessment, class members find the fractional amount for prices, times, and populations. There are a few percent and...

The probability of learning from this lesson is high! Learners calculate probabilities as numbers and as decimals. They see how to use a complement to find a probability and even try a simple geometric probability problem.

Students are presented with the problems of percentages and focus upon numbers in contrast to 100. They calculate problems with money and are engaged with the use of games as a teaching tool. Students also interpret data as presented in...

Far out — plan a trip to space! Aspiring mathematicians steer a space vehicle through an asteroid field, calculate currency exchanges to buy provisions, and determine placement of charges to blow up asteroids. Along the way, they learn...

Time to come clean! Scholars continue preparing the shampoo they created in the previous two lessons. The purpose of this stage is to calculate the perfect amount of additive to make the shampoo lather. 

In this algebra lesson, students rewrite percents as decimals and decimals as fractions using a calculator. There are 34 problems with an answer key.

Students solve problems involving fractions, decimals and percents. In this algebra lesson, students examine the relationship between fractions and percents and between decimals and percents. They convert between percents, decimals and...

Students examine the concept of percent and calculate percentages of one hundred and convert them into fractions and decimals. They view and discuss a one hundred square grid and identify percentages. Students design a playground...

In this function tables, money activity, students examine 2 different function tables, where they are given input information. Students determine the rule of the function table, then calculate the missing output values. The first table...

In this interest instructional activity, students calculate interest and percentages of numbers in number and word problems. Students complete 29 problems.

In this percent worksheet, students problem solve and calculate how to change ten fractions into percents. Students share their answers with their classmates.

Students make, read and interpret circle graphs.

Sixth graders solve sales tax problems.  In this solving sales tax problems instructional activity, 6th graders find the sales tax on various items.  Students are given a list of expenses that a family spent on vacation before...

Eighth graders use ratios and proportions to solve real-life problems.  In this using ratios and proportions to solve real-life problems lesson, 8th graders estimate the cost of a road trip.  Students estimate the distance...

In this percents worksheet, students solve 4 problems in which a percentage of a number is calculated. Students also calculate the number that is a given percent of another number.

Calculate the areas of scale drawings until a more efficient method emerges. Pupils find the relationship between the scale factor of a scale drawing and the scale of the areas. They determine the scale of the areas is the square of the...

What occurs when a hydrate is heated? Lead your class in exploring the answer to this question as they investigate the properties of a hydrated compound. They heat copper(II) sulfate pentahydrate and evaporate the water...

Many math concepts are covered through this resource: percentages, decimals, ratios, exponential functions, graphing, rounding, order of operations, estimation, and solving equations. Colorful worksheets and a link to a Google search for...

Show your shoppers that knowing how to calculate the percent increase or decrease of an item is a handy tool to know when they are looking for a good sale. Use as a quick three example introduction to the topic. The guided practice...

Eighth and ninth graders solve and graph 42 different problems that include writing various equations and graphing them on a grid. First, they create a table for each equation and graph it on a grid locating the x-and y-intercepts. Then,...

Enough stuffed crust to go around. Pupils calculate the area and perimeter of a variety of pizza shapes, including rectangular and circular. Individuals design rectangular pizzas with a given area to maximize the amount of crust and do...