CK-12 Foundation
Problem Solving Plan, Mental Math: The Perfect Lemonade 1
Find the perfect amount of water for lemonade. Scholars solve the famous problem of measuring four liters of water using a three-liter container and a five-liter container. An interactive allows users to see each step of the solution.
CK-12 Foundation
Proportions and Scale: Problem Solving Plan, Proportions
Slide into a lesson on proportions. A slider interactive lets users adjust three of the four values in a proportion and automatically updates the fourth value. Scholars use the interactive to help answer a set of challenge questions on...
CK-12 Foundation
Problem Solving Plan, Estimation with Decimals: Shopping
Mathematicians go on a virtual shopping trip in an interactive designed to boost the concept of estimation. Scholars read and answer five questions—multiple-choice, true or false, and a discussion—with help from a drag-and-drop shopping...
CK-12 Foundation
Using Quadratic Equations to Solve Problems: Construct a Soccer Field
Build a soccer field through a little mathematical analysis. Individuals manipulate the dimensions of a soccer field as they drag points to new positions. The simulation shows the corresponding intercepts and area. As pupils explore the...
CK-12 Foundation
Inverse Variation Models: Speedometer for Inverse Variation Models
Model inverse variation while solving a real-world problem. Young scholars use the interactive lesson to discover the pattern of inverse variation data. They then use that discovery to write and analyze an equation.
ABCya
A Blocky Christmas!!
And you thought holiday shopping was tough! A fun Christmas game prompts players to direct a star block into position with the arrow keys on their keyboard. As they progress through levels, they use the star block to move additional...
Curated OER
Chart problems involving car defects and customer service departments
In this interactive activity, students solve two problems using the charts provided. Students must convey they are able to understand charts and how to read them.
Curated OER
Word Problems
In this calculus activity, students use integration to solve word problems they differentiate between integration and anti derivatives, and between definite and indefinite integrals. There are 3 questions with an answer key.
Curated OER
Fractions Two-Step Word Problems-Mixed Numbers
In this fractions worksheet, students complete word problems containing fractions and mixed numbers. Students complete 12 problems.
American Museum of Natural History
DNA Detective
Match up the DNA code. Pupils read the website from the American Museum of Natural History about how DNA can determine whether a skin is from a particular type of reptile. Using the same technique, learners match up products with the...
Curated OER
Basic Proportions Worksheet
For this middle school mathematics worksheet, students use cross multiplication to solve proportions. The interactive worksheet has a "step-by-step" link for an in-depth solution. The one page worksheet has twenty problems.
Curated OER
Design Project: Audio Tone Control
In this electrical circuit worksheet, students answer a series of 4 open-ended questions with schematics about audio control in stereos. This worksheet can be printed and the answers are available on-line.
Curated OER
Current Divider Circuits
In this circuits worksheet, students answer ten questions about current divider circuits, the resistance in them, the currents in resistors of parallel circuits and they design, build and mathematically analyze a circuit.
Curated OER
Potentiometers
In this potentiometer worksheet, students design and construct a circuit and then mathematically analyze their work. They answer 18 questions about potentiometers and their function.
Curated OER
Series-Parallel DC Circuits Series and Parallel DC Circuits
In this electrical worksheet, students draw a schematic design and build a circuit board to grasp the understanding of series and parallel DC circuits before answering a series of 41 open-ended questions. Students interpret various...
Curated OER
Time Constant Circuits
In this time constant circuits activity, students answer 23 questions about the design of circuits that need time delays, about capacitors and inductors, and about resistors and the design of circuits.
Curated OER
Time Constant Calculations
In this time constant worksheet, students answer 52 questions about the rate of current changes and voltage changes in capacitors. They analyze circuits and determine the time it takes for capacitors to change voltage and they specify...
Curated OER
Millman's Theorem
In this electrical circuit lesson, students will answer 9 open ended questions to mathematically analyze circuits for current and voltage. This online worksheet provides diagrams for better understanding and reveals the answers.