Curated OER
All Systems Go!
Secret codes are so much fun, and a great way to practice nearly any math skill. Let your class become code breakers as they investigate inverse matrices. They use TI-Nspire technology to solve systems of equations which help them crack...
Doing Maths
Converting Metric Measurements Code-Breaker
Can your scholars crack the code of this metric learning exercise? To start, mathematicians must convert different units of measurement to the standard metric system form. Then, pupils plug in the corresponding letter to the correct...
CK-12 Foundation
Systems of Linear Inequalities: Baking Cookies
Cook up a good resource for systems of linear inequalities. Using an interactive, individuals graph a system of linear inequalities to represent constraints on the number of cookies a person must bake. A set of challenge questions...
PBS
The Lowdown — Examining California's Prison System: Real-World Ratio
Free yourself from the shackles of traditional math lessons. Young mathematicians investigate race, gender, and age differences in California's prison system. They use provided graphics to compare the prison population with the state's...
Teach Engineering
Connect the Dots: Isometric Drawing and Coded Plans
Individuals discover how to draw cubes on triangle-dot paper. They use cubes to build structures and draw corresponding isometric drawings on dot paper in the second lesson of the series of five. The activity also introduces the concept...
Curated OER
Eight Codes in Everyday Use
In this codes worksheet, students investigate eight codes used in everyday life. Fourteen activities are included as well as four miscellaneous exercise. This worksheet has great student interest.
CK-12 Foundation
Cramer's Rule
Use matrices to solve systems of equations. The interactive introduces Cramer's Rule, using determinants of matrices to solve systems of equations. Color coding helps pupils place entries correctly from the system.
Curated OER
Review of Algebra I
Test your class with this online review. They determine the probability of a given situation, solve inequalities, systems of equations, and write numbers in scientific notation. This two-page worksheet contains approximately 60...
Curated OER
Add It Up In Number Ville! Adding 2-Digit Numbers With and Without Regrouping
Students explore adding 2-digit numbers. In this math lesson, students identify 2-digit numbers and use base ten blocks to practice adding. Students use addition to break a code.
Curated OER
Math: Number Systems
Pupils examine other number systems, particularly the binary number system. They discover how to convert from decimal to other base systems. Students analyze the advantages and disadvantages of using the coded decimals.
Curated OER
Sea Ice: Cracking the Egg Code
Students study the egg code to learn about sea ice. In this sea ice lesson plan, students discuss and view a diagram to learn about the egg code when describing sea ice and its thickness. Students work in groups to play a game using the...
Achieve
Stairway
It's the stairway to learning! Scholars research all aspects of building a staircase. Using information from building codes, they write and graph a system of inequalities to analyze the constraints. The completed project is a scale model...
Curated OER
Breaking the Code
Students understand what cryptography is and how to design original number-based codes. In this cryptography lesson, students research codes during World War II. Students develop number-based codes.
Curated OER
Basic Crypto Systems
Students try to solve codes mathematically. The use of a code needs a key. Students try to decipher a code with a mathematical key. This requires focus and higher order thinking skills like analysis.
GeoGebra
All For One, One For All
Will someone please constrain those pets? Pupils create two constraint equations on the number of cats and dogs for a pet sitter. They choose specific points and determine whether the point satisfies one or both constraints. The...
Teach Engineering
The Energy Problem
Think you can solve the energy problem? You'll first need to know about current energy use. Analyzing a set of circle graphs lets scholars see where energy consumption is the greatest, both by sector and by household use. They develop a...
Curated OER
Matrices In Encryption And Decryption Of Codes
Students relate Cryptography to the solving of simultaneous linear equations in matrix notation. They explore various methods of encrypting and decrypting codes. Pupils discuss and solve simultaneous linear equations.
Curated OER
Count Like an Egyptian
In this count like an Egyptian activity, 5th graders convert 24 Egyptian hieroglyphs into modern day numbers, then write 15 modern numbers as hieroglyphs; the conversion code is given on each page.
Bowland
German or English?
Sprechen sie Deutsch? Future cryptographers must decide whether an unknown text is written in English or in German. They use provided pie charts about the frequency of words in the English and German languages to help make their decisions.
Curated OER
Blood Highways
Fifth graders read an informative paragraph about how blood travels through our bodies. Then, they fill in the missing letters for words that label things in the circulatory system. An answer key is provided on page two. An interesting,...
Institute of Electrical and Electronics Engineers
Hand Biometrics Technology
Electronic engineering hopefuls get hands-on with hand geometry and the technology of biometrics. After taking the appropriate measurement on their hands, they configure their personal hand geometry codes and compare them to classmates....
Council for Economic Education
Tax Time Scavenger Hunt
Is a 1040EZ tax form really easy? Scholars investigate the complexities of the United States taxation system with an economics instructional activity. Using a wide variety of web sources, they interpret IRS taxation rules and regulations...
Curated OER
The Dot and Dashy Language
Students examine and discuss the Morse Code. In small groups they develop messages using Morse code and take turns decipering the messages.
Curated OER
Arrange the Classroom (Part 1 of 3)
Fifth graders arrange the classroom using all the moveable objects and through the exploration of area and perimeter. They determine the area of the classroom, create and label model pieces of furniture using graph paper, and create a...