Doubles Addition Facts and Adding Within 12
Begin the lesson by playing the "Doubles Song" by Jack Hartmann.
2 Direct Instruction - Pearson's Envisions
Show Pearson's Envisions video for Lesson 3.4.
Make towers with snap cubes to show 1+1, 2+2, 3+3, 4+4, and 5+5.
3 Guided Practice - Pearson's Envisions
Complete the first and second page of Pearson's Envisions worksheet using snap cubes.
4 Independent Practice - Pearson's Envisions
Students will complete the third page and back "Problem-Solving" page of Pearson's Envisions independently. They may choose to use snap cubes, make a drawing, or any other strategy to solve the equations.
5 Independent Practice - Math Centers
One technology station during Math Centers is "Xtra Math".
6 Independent Practice - Math Centers
Another technology station during Math Centers is IXL. I have the modules that align with the lesson objectives starred.
7 Independent Practice - Math Centers
The final technology station is Compass Learning. The modules are based on the RIT bands from NWEA's MAP test taken in the Fall. It will be updated with areas of focus again in the Winter, after being taken again.
8 Guided Practice - Math Centers
Students will work with me in a small group setting based on their RIT bands from NWEA's MAP test. The activities will be based on sample questions from a MAP prep program.
Key Standards Supported
Operations And Algebraic Thinking
Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.2
Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
Apply properties of operations as strategies to add and subtract.3 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)
Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.
Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ – 3, 6 + 6 = _.