West Contra Costa Unified School District
Simplify Expressions and Solve Equations Using Two-Column Proofs
Increase understanding of the algebraic properties and their importance. Scholars justify their steps as they simplify expressions and solve equations. They formalize their work as two-column proof.
Curated OER
Addition of Four Numbers (49 Problems)
Pupils solve 49 problems in which four numbers are added with carrying. These are 2, 3, or 4 digit numbers in column addition.
Curated OER
Number Patterns/ Odd and Even #2
What's odd? What's even? And what is the pattern? Learners explore addition problems to answer this question, deciding if the answer to each equation is odd or even. They then draw a two-column table to illustrate the outcomes of the...
Curated OER
Two-Digit Addition With Regrouping
Second graders practice two-digit addition with regrouping. In this addition lesson, 2nd graders use craft sticks to solve two-digit regrouping problems. Students solve problems on the chalkboard.
Curated OER
Study Buddies: Adding Two-Digit Numbers
Some times a simple lesson is all you need. Here are 2 worksheets that can be used as a lesson on problem solving, addition, and partner work. The first worksheet has learners use a tens and ones charts to practice adding simple...
Curated OER
Study Buddies: Adding Three-Digit Numbers
In this math worksheet, students will work with a coach to solve a story problem in which they must add three-digit numbers. Students will follow a step-by-step process and notes are provided for the coach.
EngageNY
The Structure of Ratio Tables—Additive and Multiplicative
Build tables by understanding their structure. Scholars take a closer look at the structure of ratio tables in the 10th segment in a 29-part series. Individuals realize that the tables can be built using an additive or...
Curated OER
NUMB3RS - Season 2 - "Convergence" - Air Hockey
Learn how to use a matrix to organize data to solve a problem. This activity uses wins and losses to rank players for an air hockey tournament they wish to have. After practicing some basic matrix operations the class could do the...
Curated OER
Making a Ten
An addition table supports third graders as they learn strategies to improve their math fluency. When finding sums greater than ten, students are taught how to first make a ten and then add on the rest. A similar method is also...
EngageNY
Substituting to Evaluate Addition and Subtraction Expressions
Substitute this resource for what you used to use. Learners identify patterns in data tables and write addition and subtraction expressions to represent relationships. Substitution allows them to solve problems in context in the 20th...
Curated OER
Multiple Number Addition: Two-Digit; Four Numbers (A)
In this math worksheet, students solve 36 problems in which four 2 digit numbers are added in a column. There is regrouping in the problems, which are in vertical format.
Curated OER
Checking Addition and Subtraction by Estimation
In this mathematics worksheet, students solve various equations using different methods. They estimate each answer by checking the additions and subtractions given for each. Then, students write in the decision column wither definitely...
Curated OER
Adding Two- and Three-Digit Numbers
In this adding two- and three-digit numbers worksheet, students, with a partner, problem solve and calculate the answers to eight mathematical word problems and equations.
Curated OER
Magic Sum
Students calculate two-digit addition problems. They observe a teacher-led demonstration, and solve various problems independently.
Curated OER
Adding Two-Digit Numbers
In this adding two-digit numbers worksheet, students, working with a partner, problem solve seven addition equations and word problems.
Curated OER
Addition And Subtraction Facts With 6
In this addition and subtraction facts with six worksheet, students write the fact families in which the sum is six. Students write the three numbers for the fact families at the top of each of the four columns. Students fill in thirty...
Curated OER
Rice Cookies Addition
Fourth graders practice adding rice cookies. In this mental math lesson plan, 4th graders get into groups and call out numbers to each other to add mentally. Students use the rice cookies to show the answer.
Curated OER
Multiple Number Addition: Two-Digit; Four Numbers (B)
In this multiple number addition worksheet, students use their problem solving skills to solve 30 problems that require them to add multiple numbers.
Curated OER
Five Minute Adding Frenzy (A)
In this five minute adding frenzy worksheet, students problem solve one hundred addition equations within five minutes by writing the sum of the column and row numbers in each space.
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Five Minute Adding Frenzy (A)
In this five minute adding frenzy worksheet, learners problem solve four charts containing a hundred addition equations in each in less than five minutes for each one.
Curated OER
Proving Quadrilateral Properties
Working backwards can sometimes help you see a path to solving a problem. In this chapter, properites of quadrilaterials are proven by looking at flowcharts and working the probem backwards. Worked through examples are given, along with...
Curated OER
"As You Like It" by William Shakespeare
Jacque's soliloquy from Act II, scene ii of As You Like It sets the stage for a close reading exercise that models how to approach difficult, dense text and enables readers to practice reading comprehension and analysis...
American Chemical Society
Production of a Gas - Controlling a Chemical Reaction
Though the publisher designated this unit for use with third through eighth grades, this particular lesson would be best used with middle schoolers due to the specific measurement skills required. Basically, they set up the reaction...
Curated OER
Utah History & Geography
Fourth graders practice large digit addition. Students become familiar with column addition. Students develop knowledge of counties and county seats.