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# Number and Operation

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• Three bookmarks to help remember counting to C by Xs.
• Three bookmarks to practice counting from C to M.
• Students create a newspaper featuring a numerical system (Egyptian, Roman, etc.) This lesson comes with specific task suggestions and a grading rubric.
• 10 pages plus answer sheet
• Three bookmarks with numbers from X to XX
• A one page worksheet ranging from simple (increasing ingredients for a larger cake) to difficult (with decimals to the third place).
• Three pages mixing explanations and practice of square root, with a one page answer key.
• Single digits, unlike fractions; 5 pages.
• Including an introduction to the history of algorithms as well as their more common contemporary uses, this mini-unit features short, easy problems and a few longer ones to help students understand the importance of algorithms in problem-solving.
• Three bookmarks to practice counting from I to X.
• Stack the matching root, multiplication fact, and cube to solve the puzzle. Includes cube roots of 1-12. Can be combined with Cubed Stacks to illustrate the inverse operation. Laminate for a fun, reusable classroom game.

• 5 pages with answers.
• Single digits, unlike fractions; 5 pages.
• Single digits, unlike fractions; 5 pages.
• Roman and Arabic Numerals
• Students practice fraction skills by doubling, tripling, and halving recipes of their choice.
• A poster explaining the rules of division of negative numbers.
• A one page explanation of the rules of using exponents, followed by a practice sheet and an answer page.
• Stack the matching exponent, multiplication fact, and product to solve the puzzle. Includes two's raised to the 1st-12th powers. Laminate for a fun, reusable classroom game.

• A clear explanation of Roman numerals, with some of the basic rules, and a worksheet to help practice.
• Single digits, unlike fractions; 5 pages.
• Packed with historical facts and figures, this great unit features four reading comprehensions and a 3 page review quiz.
• Three one page practice sets of long division problems with decimal points, 8 problems per page. Answer sheet included for each page.
• 10 pages plus answer sheet
• single digits, unlike fractions; 5 pages.
• Single digits, unlike fractions; 5 pages.
• Single digits, unlike fractions; 5 pages.
• 3 pages; large spaces to solve problems
• single digits, unlike fractions; 5 pages.
• By 10, by 9, by 5, by 3, and by chunks. This unit contains tricks for multiplication and for checking your work. A playful (and very useful) approach to multiplication. This unit is presented at three levels of varying complexity.
• 5 pages with answers.
• With dots at the top of each flashcard for visual representation.
• Single digits, unlike fractions; 5 pages.
• Three one page practice sets of long division problems with decimal points, 8 problems per page. Answer sheet included for each page.
• Explains prime and composite numbers, including an introduction to the "Sieve of Eratosthenes"
• Worksheets to practice 3-digit multiplication. 5 pages plus answers.