Scholastic
Cracking the Code
Can you figure out the code? Learners interpret ten number patterns and write the five numbers that come next. Next, they create their own number patterns based on their own codes.
Curated OER
Coin Codes
Students work on cracking coin codes in honor of the Navajo Code Talkers Medal. Students review the handout on Crack the Code. Students race to see who can crack the code the fastest.
Curated OER
Coded Message Game
In this coded message activity, learners use the two-digit numbers and letters of the alphabet code to decipher a quote about the brain from Santiago Ramon y Cajal. Students decode eighteen words.
Curated OER
Secret Code
In this multiplication worksheet, students complete multiplication problems containing numbers 1 through 12 and create a secret code at the end. Students complete 21 problems.
Curated OER
Secret Code
In this division worksheet, students divide one and two digit numbers and come up with a secret code at the end. Students complete 11 division problems.
Curated OER
Calculator Code Words
In this calculator code words worksheet, students will read a mega list of code words. Using the code words, students will write their own clues and create their own exercises.
Curated OER
Addition Code
In this addition code instructional activity, students complete the addition problems and use the code to find the hidden message. Students complete 20 problems.
CK-12 Foundation
Values Written as Powers: Binary Numbers 17 to 24
Boost mathematicians' proficiency of binary numbers 17 to 24 with an interactive comprised of six questions—multiple-choice, true or false, and a discussion. A color-coded table reveals binary equivalents to aid in the problem-solving...
CK-12 Foundation
Values Written as Powers: Binary Numbers 9 to 16
Challenge mathematicians to crack the binary code with an interactive that focuses on numbers nine to 16. A table reveals exponential equations to aid in answering multiple-choice questions. A discussion question gauges comprehension.
Google
Surveys and Estimating Large Quantities
Looking for an estimation activity a bit more involved than the typical "guess the number of jellybeans in the jar" game? Here, learners use a picture to estimate the number of people at a large event, look for potential problems with...
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.
CK-12 Foundation
Decimals as Fractions
Converting decimals to fractions is the focus of a five-question interactive. A color-coded tool assists mathematicians in discovering solutions. Multiple-choice questions make up the majority of the problems and a discussion question...
CK-12 Foundation
Sum Notation and Properties of Sigma: Cracking the Code
Help your class develop an understanding of sigma notation. Pupils match the sigma notation with the sums. Using the expanded sums, learners evaluate the summations. The scholars move on to prove a property of sums.
Curated OER
The Rotating Grille
Students experience the geometric method of coding by actual construction and use of a rotating grille. Students use rotations and reflections to code and decode messages. Students explore nomenclature and symmetry.
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
Secret Code
In this multiplication puzzle instructional activity, students find the products to 18 elementary multiplication problems. They solve the code using the letters assigned to each product. They read the secret message.
Curated OER
Color Code Coloring Sheet
In this coloring worksheet, students use the color code chart to color the picture of a boy according to the provided instructions.
CK-12 Foundation
Solving a Matrix Equation: Mystery Matrix
Solve a matrix in code—color code. Pupils use the interactive resource to set up the matrix equation and its solution path. Scholars use the created solution path to determine the entries of the 2 X 2 solution.
Curated OER
Working with Cuisenaire Rods In Mathematics
Fourth graders learn the numerical value of each underlined letter of the standard Rod Code and develop systematic usage for building new units.
CK-12 Foundation
Decimal Multiplication: Reducing the Weight
Eight questions challenge mathematicians to multiply decimals. A color-coded tool with movable parts assist participants in answering word problems. Item response types include fill in the blank, multiple-choice, and a discussion.
CK-12 Foundation
Products of Two Fractions: Blocks
Five questions make up an interactive designed to boost the multiplication of fraction skills. An assortment of color-coded fraction blocks assists participants to find the right answer. Question types include multiple-choice and fill in...
CK-12 Foundation
Proportions to Find Percents: Bag of Candy
Proportions and percents are the focus of an interactive designed to boost math proficiency. Five questions challenge participants to solve candy-themed word problems. A color-coded tool with moveable parts assists mathematicians in the...
CK-12 Foundation
The Percent Equation: Soccer Stadium
A soccer-themed interactive challenges mathematicians to solve five questions involving percent equations. Question types include multiple-choice, fill in the blank, true or false and a discussion. A color-coded stadium with movable...
Scholastic
Optical Illusion
Number theory gets a workout in an activity that asks individuals to identify and color code the prime numbers and the composite numbers in the provided graphic.