ICANyons Parent Toolkit for First Grade Mathematics
Operations and Algebraic Thinking: I CAN...
Standard
Solve addition and subtraction word problems using pictures and equations.

Core Standard
1.OA.1 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.

In Other Words
Students will be able to solve addition and subtraction story problems with the aid of objects and pictures.

If Mastered
Have your child do any of the activities found on the following website: http://ccssmath.org/?s=1.OA.1.

If Not Yet Mastered
Have your child do the following addition word problems: http://www.k5mathteachingresources.com/supportfiles/1stgdadditionproblems.pdf.
Subtraction Word Problems: http://www.k5mathteachingresources.com/supportfiles/1stgdsubtractionproblems.pdf. If your child has difficulty, support them to solve the story problems with real objects and talk through how you added object and subtracted objects. 
Standard
Understand the relationship between addition and subtraction.

Core Standard
1.OA.3. Apply properties of operations as strategies to add and subtract.2 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.)
1.OA.4 Understand subtraction as an unknownaddend problem. For example, subtract 10  8 by finding the number that makes 10 when added to 8. 
In Other Words
Students will be able to choose the addition or subtraction to solve a math problem.

If Mastered
Have your child choose an operation and write the equation, for example 6 + 3 = 9. Then have your child write all the fact families for example: 3+6+9, 93=6, 96=3.
1.OA.3: With parental support, do any of the following activities from the website: http://ccssmath.org/?s=1.OA.3. 1.OA.4: With parental support, do any of the following activities from the website: http://ccssmath.org/?s=1.OA.4. 
If Not Yet Mastered

Standard
Add within 20.

Core Standard
1.OA.6 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).

In Other Words
Students will be able to use addition strategies (counting on, making 10, etc.) to solve addition problems to 20.

If Mastered
With parental support, do any of the following addition activities from the website: http://ccssmath.org/?s=1.OA.6.

If Not Yet Mastered
Using the following website: http://www.k5mathteachingresources.com/1stgradenumberactivities.html.
Have your child do one of the following: Plus One, Math Fact Sort, Ten Frame Fill, Double Facts, Find 10, Make 10, Facts of 10, Domino Addition. 
Standard
Subtract within 20.

Core Standard
1.OA.6 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).

In Other Words
Students will be able to use subtraction strategies (counting backwards) to solve subtraction problems to 20.

If Mastered
With parental support, do any of the following subtraction activities from the website: http://ccssmath.org/?s=1.OA.6.

If Not Yet Mastered
Have you child practice one of the following activities:
Ten frame subtraction: http://www.k5mathteachingresources.com/supportfiles/tenframesubtraction.pdf. Subtract from Ten: http://www.k5mathteachingresources.com/supportfiles/subtractfrom10.pdf (students use one dotted dice, and one number dice 1217, child rolls both dice writes the number and counts backwards the dots, to create and solve a subtraction problem. Repeat until child can solve ten in two minutes.) 