Kenan Fellows
Density
Most scholars associate density with floating, but how do scientists determine the exact density of an unknown liquid? The third activity in a seven-part series challenges scholars to find the mass and volume of two unknown liquids. Each...
EngageNY
Decimal Expansions of Fractions, Part 1
Is it possible to add infinitely long decimals? As pupils complete the examples in the ninth lesson of this 25-part series, they determine that adding these decimals cannot be done without error. Their task is then to determine the size...
Pingry School
Determination of the Percent Hydration and the Simplest Formula of a Hydrate
Does the crystal structure of a hydrated solid determine the proportion of water absorbed, or does the application of heat change the absorption? Scholars experiment with both variables to determine the answer. They add their collected...
Curated OER
Ratio, Rates and Percentages
For this ratio, rates and percentages worksheet, 8th graders solve 22 various types of problems related to ratios, rates and percentages. They first write ratios in lowest terms and describe each of comparison stated. Students also solve...
Curated OER
Measurements and Their Uncertainty
In this measurements worksheet, students fill in 10 blanks, determine if statements are true or false, match 6 terms with the appropriate definitions, and solve 2 problems. Topics include converting to scientific notation, identifying...
Curated OER
What Can We Measure About Chemicals?
In this measurement worksheet, students read about accuracy of measurements as compared to the precision of measurements. Students answer four precision problems and solve four accuracy problems.
Curated OER
Percent of Change
In this algebra worksheet, students convert between percents and decimals. They calculate sales tax, discounts and relative errors. There are 4 questions with an answer key.
Curated OER
Estimating Percents
In this math worksheet, students complete 25 problems where they estimate the percentage of shaded figures, fractions of a whole, and by solving word problems which use percents.
Teach Engineering
About Accuracy and Approximation
How accurate are robots? Groups draw lines by moving robots backwards and forwards by one rotation of the wheels. Using the appropriate formula, they determine the percent error in the length of the lines in relation to the calculated...
Mathematics Assessment Project
Security Camera
Only you can prevent shoplifting. Class members use a given floor plan to investigate the placement of a security camera. They must incorporate knowledge of area and percents to complete the task.
Curated OER
Determining the Enthalpy Change of a Reaction
In this enthalpy of reactions worksheet, students use a known amount of copper (II) sulphate solution and an excess of zinc powder to calculate the enthalpy change of the reaction. Students measure the temperature change over the course...
Curated OER
Acceleration Lab
Young Einsteins experiment with the acceleration of Hot Wheels™ toy cars down inclined planes at various angles. This classic physics lab activity is thoroughly explained in both a teacher’s guide and a student lab sheet. Science...
Freecloud Design
Mathmateer
Three, two, one...liftoff! Elevate math skills to new heights while having a blast. A great resource that combines entertainment and education for children of all ages.
Curated OER
SAT Identification of Sentence Errors Practice Tests
In this identification of sentence errors worksheet, students choose the answer that best corrects the grammatical errors in each sentence. Students have 10 minutes to answer 15 questions in this SAT practice worksheet.
Curated OER
What Can We Measure about Chemicals?
For this measuring chemicals worksheet, students determine the accuracy and precision of measurements and distinguish between the two. They find the percent composition of compounds, the molar mass of compounds and the volume of gases at...
Curated OER
Computer Titration Lab Simulation
Students perform a lab simulation for a titration of monoprotic and diprotic acids. In this titration simulation lesson plan, students use a computer program to neutralize an acid with a base and compute the unknown concentration of the...
Teach Engineering
Swinging Pendulum
Get into the swing of things. Pupils use a pendulum to demonstrate the conversion of potential energy to kinetic energy and back. After measuring the speed of a pendulum and compare it to the calculated theoretical speed, they determine...
Curated OER
Quiz: Error in Measurement
In this error in measurement quiz, students read given problems and determine the percent of error, find the absolute error, the relative error, and identify the limits. This one-page worksheet contains ten problems.
Curated OER
Quiz: Error in Measurement
In this measurement worksheet, students are presented with the measurements of two items. They compute the upper and lower limits of the range of tolerance for the measurements. Students find the absolute error and percent of error for...
Curated OER
Colorful Fractions
Students use charts to show fractions. In this fractions and percents lesson, students review fractions, percents and ratios. Students create tables and color the cells to make different fractions. Students answer questions about each...
Curated OER
Penny Lab
In this percent composition worksheet, young scholars carry out an experiment to determine the percent of zinc in a penny. They write a balanced equation for the chemical reaction they performed with the penny and hydrochloric acid.
Chemistry Collective
Virtual Lab: Cola and Sucrose Concentration Problem
Recreate the secret Coca-Cola formula in a virtual lab. Young scholars create the solution and then calculate sucrose concentrations in terms of percent mass, molarity, molality, and mole fraction. Then using density, learners determine...
Curated OER
Calorimetry Lab
In this calorimetry lab, students apply the information read about a calorimeter to conduct a scientific investigation. Students record their data in a chart. Students use the information from the chart to calculate specific heat of...
Curated OER
Go Figure! Using Percents in the Real World
Sixth graders solve sales tax problems. In this solving sales tax problems lesson, 6th graders find the sales tax on various items. Students are given a list of expenses that a family spent on vacation before taxes. Students determine...
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