Curated OER
Secret Code
In this division activity, students divide one and two digit numbers and come up with a secret code at the end. Students complete 11 division problems.
Curated OER
Code Talkers
Students investigate the Navajo code talkers contributions to World War II. They read and discuss a fact sheet, and create and decode secret messages using a Navajo code talkers' dictionary.
Curated OER
Coding History
Students study the topic of codes in Computer Science. They research it history, divisions in the field and its applications. The activity also includes a brief overview of the information technology theory.
Little 10 Robot
Operation Math Code Squad
Your mission, if you decide to accept it, is math skills practice. In this app, Mission Impossible meets basic number operation skills, and your students are the secret agents.
Houghton Mifflin Harcourt
Challenge: Code Breaker
Here is a code-breaker multiplication and division game which has learners find the missing letter in equations, then solve and use those letters to "break the code," which actually is the answer to a riddle. Make math fun with a...
Curated OER
Code Cracking
There is nothing more engaging than cracking a secret code! Middle schoolers will replace letters with numbers to solve problems. This game will help them to begin to understand algebra questions by finding the value of missing numbers....
Curated OER
Guess the Secret Code
Learners practice blending sounds into words. After the instructor demonstrates blending phonemes to make words that can be read, students are divided into two teams for a word blending game. Given the initial and final sounds,...
Curated OER
Secret Code
In this division worksheet, 4th graders solve the 11 division equations and then match each number in the message with the division quotients. Students determine the message.
Curated OER
Goldentail's Rounding Railroad
In this number puzzle worksheet, students solve 24 equations in each of two sets of multiplication and division problems. They circle each answer and round them to the nearest whole number. They use the secret code that is shown in a box...
Curated OER
Minnesota Muskrat's Worldwide Adventures
In this long division instructional activity, 5th graders solve problems to decode a secret message. Students solve for 60 problems with some remainders and two digit quotients.
Code.org
Public Key Cryptography
Investigate how public key cryptography works. Scholars continue their study of one-way functions and asymmetric keys and apply this information to public key cryptography. They use an app to explore public key cryptography and its...
Curated OER
Solving Single-Step Word Problems
Math wizards learn the five-step plan to solve math word problems. They investigate the five-step process for solving word problems, and examine the use of code words for each of the operations and solve a problem using the strategies.
Curated OER
You Know the Answer: Math Riddle
Although the riddle is an outdated political reference, this math challenge is a good practice in operations and domain-specific vocabulary. Learners complete 18 problems, using multiplication, division, subtraction, and addition. Some...
Curated OER
Detective Digis and the Computer Caper
Mathematicians participate in an hands-on activity to investigate the binary number system and write messages in binary code and have classmates decipher the messages. A said video on the topic does not seem to be available, but the...
Curated OER
Clock Arithmetic and Cryptography
Students perform basic operations in modular (clock) arithmetic. Students encode and decode messages using shift and affine ciphers. Students apply their multiplication, division, addition, and subtraction skills.
Curated OER
You Know the Answer
In this problem solving instructional activity, 4th graders are given an answer to a question and must solve the mathematical problems to discover the secret question. Students solve for 18 problems using addition, subtraction,...
Southern Nevada Regional Professional Development Program
“Double Double Speak Speak”
Bilateral suborbital hematoma? Call an audible? 404? Have fun with “the twittering or warbling of birds,” or as 14th century French speakers would say, have fun with “jargon.” Groups match specialized jargon with plain speech, decode...
Curated OER
Music-Follow the Drinking Gourd
Fourth graders study the song "Follow the Drinking Gourd." In this dance lesson, 4th graders listen to the book by the same name, listen to the music, and in small groups create a short dance illustrating a stanza from the song.
Curated OER
Music: Follow the Drinking Gourd
Fourth graders use movement to express a concept. In this interdisciplinary lesson, 4th graders listen to the book, Follow the Drinking Gourd, which demonstrates the types of 'communication' used by slaves traveling the Underground...