Curated OER
Choosing the Operation: Add or Subtract
Try a new approach to addition and subtraction by giving scholars the numbers but leaving out the sign. They must determine if the numbers have been added or subtracted, then write in the appropriate operation. There are a few examples...
Curated OER
Mondrian - Primary/Secondary Color Study
Utilizing computer software, learners demonstrate the color spectrum. They investigate the life of the artist Piet Mondrian and define his style of artwork. Then they use Photoshop to recreate some of his designs while discovering the...
Charleston School District
Scientific Notation Operations
How do you operate with numbers in scientific notation? The resource provides examples on how to divide and multiply with numbers written in scientific notation. The handout and video also cover the procedure for addition and subtraction...
Florida Center for Reading Research
Fluency: Phrases, Fleeting Phrases
An activity boosts readers' fluency in reading common phrases and idioms. Peers time one another and track their progress using phrase cards and record sheets.
EngageNY
Divisibility Tests for 3 and 9
Who knew the sum of a number's digits gives such interesting information? The 18th installment of a 21-part module has scholars investigate division by three and nine. After looking at several examples, they develop divisibility tests...
Curated OER
Counting by 3s, 4s, and 5s
Skip count along the mushrooms to complete these number sentences which give young scholars an introductory look at addition and subtraction. Starting from five double-digit numbers, they subtract or add by threes, fours, and fives to...
Curated OER
Rules of Thumb for Diction
What is the difference between accept and except? Affect and effect? Brilliantly advise your class with the advice in these slides. Definitions of commonly misused words from A-Z help clarify meaning and usage.
Curated OER
Worksheet #10
In this mathematics activity, 2nd graders solve various problems by either adding or subtracting when necessary two-digit terms. They use a number line at the top for help solving each.
Pennsylvania Department of Education
What Balances?
Students explore another meaning of subtraction as it pertains to the inverse of addition. In this what balances lesson plan, students identify the concept of subtraction as a balance. Students use subtraction facts to generate addition...
Curated OER
Year 6 Booster pg 4
Students must use their mathematical reasoning skills in order to make four math statements true by filling in the boxes with the correct digits. Addition, subtraction, multiplication, and algebra problems are solved.
Curated OER
Addition and Subtraction, Multiplication and Division
Students must use their mathematical reasoning skills in order to make four math statements true by filling in the boxes with the correct digits. Addition, subtraction, multiplication, and division problems appear.
Curated OER
Fun Math Subtraction Worksheet
In this subtraction worksheet, students complete a total of 12 problems, subtracting 1, 2, and 3-digit numbers from 4 digit numbers.
Curated OER
Mental Math Ideas
In this mental math worksheet, students complete the multiplication and subtraction problems where they use the strategy "subtract all digits from 9 except the last one from 10". Students complete 26 problems.
Curated OER
Carry and Borrow
Second graders complete basic math computations. In this addition and subtraction lesson, 2nd graders learn how to carry and borrow numbers when adding and subtracting. Students learn a carrying song to help them remember. Students...
Curated OER
Year 6 Booster pg. 8
In this mixed practice math instructional activity, 3rd graders complete two problems by following directions to write 3 and 4 digit numbers and write the missing 2 digit numbers to complete 5 equations.
Curated OER
Year 6 Booster Pg. 7
For this mixed practice worksheet, 3rd graders follow directions to make a 3 digit and 4 digit number. Students complete 5 equations by writing in the missing number.