National Nanotechnology Infrastructure Network
Is Measuring an Art or a Science?
Not only do future engineers learn the difference between accuracy and precision, they also get some hands-on experience using different measuring tools.
Illustrative Mathematics
Accuracy of Carbon 14 Dating I
Here is an activity that is intended to highlight a very important issue about precision in reporting and understanding statements in a realistic scientific context. Discuss different ways of reporting the half life of Carbon 14...
Illustrative Mathematics
The Lighthouse Problem
Long considered the symbol of safe harbor and steadfast waiting, the lighthouse gets a mathematical treatment. The straightforward question of distance to the horizon is carefully presented, followed by a look into the...
Curated OER
Quinoa Pasta 3
A mixture of quinoa and corn is for dinner in this collaborative task that sets up nicely as a system of linear equations. Your supper guests discuss numerical precision and percentages as they formulate a plan of how to solve the problem.
Illustrative Mathematics
Running Around a Track I
The accuracy required by the design and measurement of an Olympic running track will surprise track stars and couch potatoes alike. Given a short introduction, the class then scaffolds into a detailed analysis of the exact nature of the...
Las Cumbres Observatory
Calculating the Age of Solar System Objects
The number of craters on the surface of solar system objects has a direct correlation to its age. Learners use the concept to determine the age of several objects in the solar system. Using satellite images, they count craters within a...
It's About Time
Mass and Volume
Don't be so dense that light bends around you; study the relationship between mass and volume instead. Young chemists measure the density of a variety of liquids and solids. A reading passage and analysis questions introduce pupils to...
Teach Engineering
Accelerometer: Centripetal Acceleration
Scholars build robotic arms that swing back and forth and use them to collect velocity and acceleration data. To analyze the results, pupils compare data to the equations for angular velocity and centripetal acceleration.
Curated OER
Task: Range of Motion
If you have ever injured your shoulder, you know it takes a while to improve your arm's range of motion. In this real-world example, young mathematicians gain insight into the world of physical therapy while they analyze a case study...
Curated OER
Access Ramp
Just about every public building that your students are familiar with has an access ramp which complies with ADA requirements. As it turns out, designing such a ramp is an excellent activity to incorporate slope, the Pythagorean Theorem,...
Curated OER
Accurately Weighing Pennies I
Drawing from a scenario of the history of the penny, learners write and solve a system of linear equations from a context.
Curated OER
Quinoa Pasta 2
Learners discover that a system of linear equations models this mixture of quinoa and corn in a collaborative task. Your learners receive all the relevant information in this second of three variants of tasks that ask them to find...
Illustrative Mathematics
How Many Cells Are in the Human Body?
Investigating the large numbers of science is the task in a simple but deep activity. Given a one-sentence problem set-up and some basic assumptions, the class sets off on an open-ended investigation that really gives some...
Math Is Fun
Math Is Fun: Accuracy and Precision
The difference between accuracy and precision is explained, with a precautionary note about being aware of possible bias in the measuring instrument.
TeachEngineering
Teach Engineering: Computer Accuracy
Accuracy of measurement in navigation depends very much on the situation. If a sailor's target is an island 200 km wide, sailing off center by 10 or 20 km is not a major problem. But, if the island were only 1 km wide, it would be missed...
TeachEngineering
Teach Engineering: About Accuracy and Approximation
Students learn about the concepts of accuracy and approximation as they pertain to robotics, gain insight into experimental accuracy, and learn how and when to estimate values that they measure. Students also explore sources of error...
CK-12 Foundation
Ck 12: Plix: Accuracy and Precision
[Free Registration/Login Required] In this interactive you will slide the red dot right to see how well each of the throwers can throw. You will need a sign-in to access this media, but it will be well worth your time!
TeachEngineering
Teach Engineering: Close Enough?
Accuracy of measurement in navigation depends very much on the situation. If a sailor's target is an island 200 km wide, sailing off center by 10 or 20 km is not a major problem. But, if the island were only 1 km wide, it would be missed...
Science Buddies
Science Buddies: Measuring Up
Measurements are very important for scientists. It is especially important that the measurements be accurate. Think about how important accuracy is when you want to know if you are taller than a friend of yours, every inch counts. In...
Texas Instruments
Texas Instruments: Learning Measurement Conversions Through Statistics
Students learn the conversion relationship between inches and centimeters through data collection. The data collected results from measuring items using inches and centimeters as the units. They use a TI-73 to input the data into lists...
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Micrometer Model
Use this virtual model to simulate the basic operations and accuracy of a micrometer while manipulating the physical parts of the object.
Shodor Education Foundation
Shodor Interactivate: Comparison Estimator
Use this applet to practice your estimating skills comparing length, area, counting or a random sampling of those topics. You can also adjust the difficulty and the precision needed. The applet also lets you know how close you are to the...
CK-12 Foundation
Ck 12: Plix: Measurement Uncertainty
[Free Registration/Login Required] In this interactive you will measure the box against the three different rulers to best determine the height of the box with each ruler. You will need a sign-in to access this media, but it will be well...
TeachEngineering
Teach Engineering: Accelerometer: Centripetal Acceleration
Students work as physicists to understand centripetal acceleration concepts. They also learn about a good robot design and the accelerometer sensor. They also learn about the relationship between centripetal acceleration and centripetal...
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