CK-12 Foundation
Properties of Real Number Addition: The Secret of Subtraction
Learners sometimes struggle to understand the concept of adding and subtracting integers. Help them see the why behind their answers using the interactive number line. The values change as individuals adjust the number line for each new...
CK-12 Foundation
Addition and Multiplication Properties with Real Numbers: The Secret of Subtraction
An interactive boosts mathematicians' knowledge of subtracting integers using a horizontal number line by way of multiple-choice, true or false, and discussion questions.
Curated OER
Master Spy
Students explain that a code is a system of symbols, letters, words, or signals that are used instead of ordinary words and numbers to send messages or to store information. They practice deciphering a variety of secret codes used in...
Curated OER
Holocaust
The Holocaust is the focus of this interactive poetry strategy. The classroom will be set-up to remind students of the Secret Annex, with a table, lamp, and various other props. Each participant will receive 3 Saltine crackers and...
Curated OER
Meet the Recycle Guys
For this recycling activities worksheet, students draw lines to connect the names of the Recycle Guys to their pictures and use a number-letter code to find their secret message. Students write 37 answers.
Curated OER
Astronomy: Star Commander
In this online interactive astronomy worksheet, students access a specific website to answer 10 questions involving astronomy in order to unscramble a secret message.
Curated OER
Writing a Secret Message - Geography
Students select a specific area in geography and write a secret message about the area for students to guess. In this geography lesson, students write a secret message about a specific geographical location. Students present their secret...
Curated OER
"The Secret Life of Trees" Spelling
In this spelling worksheet, students fill in bubbles with he letters that correctly spell a set of 10 words from The Secret Life of Trees. Words are given on page 2.
Curated OER
"The Secret Life of Trees" Spelling Activity
In this spelling worksheet, students bubble in the letters that spell a set of words from the story The Secret Life of Trees. Words are dictated by the teacher.
Curated OER
"The Secret Life of Trees" Spelling Words
In this spelling worksheet, students find a set of 10 words from The Secret Life of Trees in a word search puzzle. Words are given at the bottom of the page.
Curated OER
"The Secret Life of Trees" Crossword Puzzle
In this crossword puzzle worksheet, students use clues to write a set of words from The Secret Life of Trees. Clues are given at the bottom of the page.
Curated OER
The Secret Life of Trees: Tall and Short Letters
In this spelling word visualization activity, students write 10 words from the book The Secret Life of Trees in boxes that represent the tall and short letters of each word.
Curated OER
Secret Message - Division
In this secret message division learning exercise, 3rd graders find the quotients in 6 division problems. They divide either one or two digit numbers by one digit numbers. They use the quotients to determine the letters that are placed...
Curated OER
How to Send a Secret Message
For this social studies worksheet, young scholars learn how sending secret messages was very important during World War II. Students are given a list of material needed and instructions to create their own secret message.
Curated OER
Dilemmas and Dealing with Them - Secrets
Students read an article about the secrets young people keep from adults with regards to the internet. Small groups analyze a worksheet of common dilemmas and agree on solutions for each problem. The whole class shares solutions for...
Curated OER
Squigly's Secret Code
For this word puzzle worksheet, students decipher the answer to a "secret code." Students analyze a code in which each letter of the alphabet is represented by a symbol.
Curated OER
Squigly's Secret Code: Car
In this puzzle worksheet, students decipher a "secret" code. Students determine the message by filling in the letter that goes with each symbol.
Curated OER
Secret Code
In this multiplication puzzle worksheet, 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.
Computer Science Unplugged
Sharing Secrets—Information Hiding Protocols
Did you know that you can find the average age of a group of people without anyone having to real their age? This resource provides directions for way to do just that. After the activity, class members read a short passage...
Curated OER
Soil's Secret
Students examine two types of soils in their area. They identify its texture and permeability to determine its origin. They share their results with the class.
Curated OER
Find the Secret Word
In this early childhood word recognition worksheet, students follow the instructions to spell the word cat and then color the cat.
Curated OER
Matrices: A Secret Weapon
Students perform operations with matrices. In this algebra lesson, students use cryptography and cryptanalysis to solve problems. They add, subtract, and multiply matrices.
EngageNY
Paragraph Writing Instruction
Writing a paragraph from details found directly in a text is the central focus of this thorough and explicit lesson plan. Using the stories Nasreen's Secret School and Rain School, third graders are lead step-by-step...
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...
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