Lesson Plan
Illustrative Mathematics

Calculating and Rounding Numbers

For Teachers 7th - 9th Standards
Mathematicians need to know that not all numbers are rational. We approximate irrational number with rational numbers. That is why a calculator may be misleading. This task give learners an opportunity to see how rounding a number and...
Interactive
Khan Academy

Challenge: Calculator

For Students 6th - Higher Ed
Calculators aren't all that useful if they don't return the correct results. In this JavaScript programming exercise, beginning JavaScript coders are guided to fix the results returned by the functions so they return correct values....
Activity
Las Cumbres Observatory

Calculating the Age of Solar System Objects

For Teachers 6th - 10th
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...
Activity
Illustrative Mathematics

Checking a calculation of a decimal exponent

For Teachers 9th - 12th Standards
In a writing prompt, learners are asked to check the calculation of a decimal exponent without a calculator. Use as an opener or assessment after studying fractional exponents. Requires a strong understanding of exponents and roots to...
Activity
2
2
Illustrative Mathematics

Calculating the square root of 2

For Teachers 7th - 10th Standards
Does a calculator give you the exact value of the square root of 2? Here, learners must decide if 1.414236 is equal to the square root of 2. They must also explain why the square root of 2 could never be equal to a terminating decimal....
Activity
American Museum of Natural History

Calculating a Biodiversity Index

For Teachers 7th - 12th
Biodiversity refers to the variety of animal and plant species in a specific habitat. With a collaborative activity, the habitat becomes a page from the white pages, and the species are the surnames in the book. Learners calculate the...
Activity
GLOBE Program

Calculating Relative Air Mass

For Teachers 6th - 12th
Combine math and science with fun in the sun! Scientists build a solar gnomon using reusable materials to calculate relative air mass. Mathematicians measure the pole's shadow and use the data to solve for relative air mass....
Activity
1
1
Teach Engineering

Flame Test: Red, Green, Blue, Violet?

For Teachers 10th - 12th Standards
Let the true colors shine through. Pupils conduct a flame test to identify an unknown element. Class members calculate and prepare specific molarity solutions of three chemicals. Using their observations of the colors emitted, they...
Activity
Teach Engineering

Watt Meters to Measure Energy Consumption

For Teachers 6th - 8th Standards
It used watt amount of energy? This resource investigates the power usage of small household appliances. Using a watt meter, groups measure the actual wattage used by an appliance and then calculate the energy used daily. 
Activity
Illustrative Mathematics

Solar Eclipse

For Teachers 9th - 11th Standards
Learners take on the role of astronomers, calculating conditions necessary for a total solar eclipse. Concepts of similar triangles and properties of circles come together as pupils create ratios and use real measurements in determining...
Activity
US Department of Commerce

Applying Correlation Coefficients - Educational Attainment and Unemployment

For Teachers 9th - 12th Standards
Correlate education with unemployment rates. Individuals compare state and regional unemployment rates with education levels by calculating the correlation coefficient and analyzing scatter plots. Pupils begin by looking at regional data...
Lesson Plan
Curated OER

Compounding with 100% Interest Rates

For Teachers 9th - 12th Standards
Your young economists will be amazed at the effect of compounding interest more frequently in this collaborative task about making sound financial choices. Learners are walked through the calculations of a couple of examples and then...
Activity
Howard Hughes Medical Institute

Calculating Iridium Fallout from an Asteroid Impact

For Students 9th - 12th Standards
Should we be afraid of a large asteroid impact on Earth today? Young scientists estimate the size and composition of an asteroid similar to the one that caused the K-T mass extinction. They apply algebraic formulas to answer questions...
Activity
Florida Center for Instructional Technology

Two for One Box Company

For Teachers 4th - 6th
Given a box of certain dimensions, young mathematicians must determine if a box that is twice as big, actually holds twice as much. This is a brain-teaser of a problem. The worksheet provides a handy table that has learners calculate the...
Activity
Teach Engineering

Load It Up!

For Teachers 6th - 8th Standards
See how a marshmallow can hold up a bridge load. Teams take a closer look at the design of bridge piers. They determine the types of loads that might affect a bridge, and, using that information, they calculate the needed cross-sectional...
Activity
Howard Hughes Medical Institute

Measuring Biodiversity in Gorongosa

For Teachers 9th - 12th
Take your biology class' understanding of biodiversity to a whole new level! Ecology scholars use data to calculate three different diversity indices based on the organisms in the Gorongosa National Park. The four-part activity uses an...
Activity
Teach Engineering

Efficiency of a Water Heating System

For Teachers 8th - 10th Standards
Tired of waiting for hot water? Groups of three determine the efficiency of an electric water-heating device. They calculate the amount of energy it takes to heat the water and the theoretical amount of energy required to heat the water....
Lesson Plan
Discovery Education

Physical Oceanography and Meteorology, Navy Search and Rescue Operation

For Teachers 9th - 12th Standards
It's an ocean rescue mission! Groups must find a pilot downed off the coast of the Chesapeake Bay. Rescuers must determine the distance needed to travel as well as the heading to get to the pilot's last known position. Taking...
Activity
Exploratorium

Tired Weight

For Teachers 6th - 12th Standards
You don't need a scale to determine weight. This activity provides a way to use the concepts of air pressure and surface area to determine the weight of a vehicle by calculating the amount of weight each tire supports.
Activity
2
2
Teach Engineering

Tools and Equipment (Part 1)

For Teachers 6th - 8th Standards
Looking for the best inclined plane for the job? Groups calculate the theoretical mechanical advantage for four different inclined planes. They determine the actual mechanical advantage by measuring the amount of force needed for the...
Lesson Plan
Illustrative Mathematics

Sharing Prize Money

For Teachers 6th - 8th Standards
When three classrooms are to split up prize money, your mathematicians must find the percentage that each class deserves and calculate the total amount. There is an option to use a calculator and practice rounding. 
Lesson Plan
1
1
Illustrative Mathematics

How Many Buttons?

For Teachers 6th - 8th Standards
Bring the class into the probability by having everyone count buttons on their shirts. Organize the data into the chart provided and chose different possibilities such as "female with one button" or "all learners with more than four...
Lesson Plan
Curated OER

Exponential Growth versus Linear Growth II

For Teachers 9th - 12th Standards
Your algebra learners discover that exponential functions, with a base larger than one, outgrow linear functions when the inputs increase sufficiently. Their analysis includes using a graphing calculator to produce tables.
Activity
1
1
Teach Engineering

How Big? Necessary Area and Volume for Shelter

For Teachers 6th - 8th Standards
Teams must determine the size of cavern needed to house the citizens of Alabraska to protect them from the asteroid impact. Using scaling properties, teams first determining the number of people that could sleep in a classroom and then...

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