All Lessons
Sort Words into Categories
K.S2.I-1 Answer and ask questions about the meaning of words and phrases in grade-appropriate oral presentations and read-alouds about a variety of topics, experiences, or events.
1.S2.B-11.S2.B-1 Determine the meaning of general academic, and content-specific words and phrases, and some common expressions.
1.S3.I-11.S3.I-1 Communicate oral presentations about a variety of topics, experiences, or events.
Share This Lesson
Use Fact Families
(D) Apply basic fact strategies to add and subtract within 20, including making 10 and decomposing a number leading to a 10
1.5.G(G) Apply properties of operations to add and subtract two or three numbers.
1.OA.3 Apply properties of operations as strategies to add and subtract. 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.41.OA.4 Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.
2.OA.22.OA.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
Share This Lesson
Memorize Subtraction Facts
(D) Apply basic fact strategies to add and subtract within 20, including making 10 and decomposing a number leading to a 10
1.3.E(E) Explain strategies used to solve addition and subtraction problems up to 20 using spoken words, objects, pictorial models, and number sentences
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).
2.OA.22.OA.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
This operations and algebraic thinking lesson covers how to memorize subtraction facts. The lesson includes research-based strategies and strategic questions that prepare students for assessments. In this lesson, students will practice the subtraction facts of numbers 2 through 10 by a combination of reading aloud and writing each fact many times in horizontal and vertical formats.
Share This Lesson
Solve Addition Equations
This algebra and functions lesson focuses on writing addition number sentences. The lesson includes research-based strategies and questions that help prepare students for assessments. In this lesson, students read the word problem and identify addition key words and number words. Then, they write an addition number sentence and practice reading aloud. In addition to the lesson, there are four pages of Independent Practice and review with questions modeled after current adaptive testing items.