CK-12 Foundation
Decimal Rounding Given Place Value
Tests mathematicians' knowledge of decimals, place value, and rounding with a five-question interactive. A tool with movable parts assists scholars in answering questions—multiple-choice and true or false. A discussion question...
CK-12 Foundation
Prices Involving Discounts: Save Money with Coupons!
Nine questions make up an interactive that challenges scholars to identify new prices after discounts. Question types include fill in the blank and multiple choice. A fully-functional tool assists participants in solving word problems....
CK-12 Foundation
Mental Math to Multiply by Whole Number Powers of Ten: The Rule for Tens
Eight questions challenge scholars to use mental math while multiplying whole numbers by powers of 10. A tool with bouncing decimals demonstrates how and where the decimal moves. Question types include several multiple-choice, a...
CK-12 Foundation
Area and Volume of Similar Solids: Similar Solids
Five questions make up an interactive designed to boosts knowledge of area and volume of solid figures. Question types include multiple-choice, true or false, and fill-in-the-blank. A scale model changes measurement to provide a visual...
CK-12 Foundation
Conversion of Decimals, Fractions, and Percents
Five questions—true or false and multiple-choice—challenge mathematicians to convert decimals, fractions, and percents. An interactive table displays how to write a portion of shapes in a variety of ways. A discussion question concludes...
Curated OER
Cryptography Implementation
Students explore cryptology. They write a research paper on cryptography. Using linear equations, students invent a code and write a secret message. Students complete cryptography puzzles.
Curated OER
Measurement of Angles
Students measure angles that are formed by parallel lines and a transversal lines. In this angles lesson plan, students measure and define angles that are made by parallel and transversal lines. They will color code the angles based on...
Curated OER
U Boat Hunt
Students recognize patterns and sequences in numbers. In this geometry lesson plan, students create rules to define the sequences and patterns they obsere. They translate coded messages as they dicuss navigational terms.
Curated OER
Coding with Linear Equation
Students explore linear equations. They participate in a simulation to save the International Space Station from intruders. Students create linear equations to save the Space Station from aliens.
Mathematics Vision Project
Geometric Figures
Logical thinking is at the forefront of this jam-packed lesson, with young mathematicians not only investigating geometric concepts but also how they "know what they know". Through each activity and worksheet, learners wrestle with...
Curated OER
0.7734: Calculator Words
In this calculator worksheet, students will solve 10 equations using their calculator. Then students will turn their calculator upside down and match the word with a clue at the bottom of the page.
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...
Curated OER
Math Technique in Multiplication and Division of Fractions
Learners multiply and divide fractions. In this math lesson, students are given explicit visual instruction of how to work with fractions. Intended for learning disabled learners, the teacher demonstrates how to manipulate the numbers by...
Curated OER
Christmas Addition Mystery Message
In this Christmas-themed worksheet, students solve 14 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Curated OER
Christmas Addition Mystery Message 2
In this Christmas-themed activity, students solve 44 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Curated OER
Christmas Addition Mystery Message 3
In this Christmas-themed worksheet, students solve 14 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Curated OER
Halloween Addition Mystery Message
For this Halloween-themed worksheet, students solve 14 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Curated OER
Thanksgiving Addition Mystery Message
In this Thanksgiving-themed worksheet, students solve 17 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Curated OER
Thanksgiving Addition Mystery Message 2
In this Thanksgiving-themed learning exercise, students solve 17 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Curated OER
Math Vocabulary Decoding Activity
In this math vocabulary worksheet, learners use a letter key code to match match vocabulary words to their definitions. A reference web site it given for additional activities.
Curated OER
A Stately Addition
In this stately addition worksheet, students translate letters to numbers. They decipher a code. This one-page worksheet contains 1 problem. The answer is provided.
Curated OER
Using 3-D Models for Code Validation with FoilSim
Students use FoilSim to complete the activity to create tables of data sets comparing the lift values for a 3-D model of a symmetrical wing section to the values predicted by the FoilSim software.
Curated OER
Grilling Algebra
Students use a grille to investigate geometry. The application of the geometric figure, which is square, the students begin the coding of a message. The use of cryptography is used to reinforce algebraic ideas.
Curated OER
Basic Crypto Systems II
Ninth graders discuss the Enigma machine used during World War II. They explore the substitution cipher and variations of it. Students examine the advantages and disadvantages of this cipher. Students write a message using the code...