Curated OER
Decoding Machine
Students are introduced to the concept of variables and their uses. In groups, they are given a code in which they must find the value of the missing words. To end the lesson, they find the value of words over ten letters long and their...
Computer Science Unplugged
You Can Say That Again! – Text Compression
Compression, the process computers use to store information, is the focus of a resource that presents two different stories that describe the concept of compression by eliminating repeated letters and replacing them with a pointer. The...
Curated OER
SHHH It's a Secret
Students rewrite word problems using expressions and equations. In this algebra instructional activity, students use the correct variable to solve and write equations. They use the TI to graph their solution.
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
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
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 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, multiplication and...
Curated OER
SAY IT WITH DNA: Protein Synthesis Tutorial
Ninth graders explore protein synthesis. In this DNA lesson students complete a worksheet and a DNA lab activity.
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.