
Resources By Unit
Below is a brief description of the topics for each unit. Links to videos are provided to help you understand instructional strategies being taught in class.
Module/Unit 2: Introduction to Place Value Through Addition & Subtraction within 20
Module 2 serves as a bridge from problem solving within 10 to work within 100 as students begin to solve addition and subtraction problems involving teen numbers. There are 3 levels when introducing addition and subtraction to Kindergarten and 1st Graders. See picture below.
Though many students may continue to count on as their primary means of adding and subtracting, the larger purpose of composing and decomposing ten is to lay the foundation for the role of place value units in addition and subtraction.
Students will learn to use the associative and commutative properties. An important aspect of building conceptual understanding for students is using visual models, so students will use number bonds and concrete materials often. Teaching students a variety of strategies with addition and subtraction will empower students in later modules and future grade levels to compose and decompose place value units and work adeptly with the four operations.
Students are learning to reason abstractly and quantitatively. Students solve change unknown problem types such as, “Maria has 8 snowballs. Tony has 15 snowballs. Maria wants to have the same number of snowballs as Tony. How many more snowballs does Maria need to have the same number as Tony?” They write the equation 8 + __ = 15 to describe the situation, make ten or count on to 15 to find the answer of 7, and reason abstractly to make a connection to subtraction, that the same problem can be solved using 15 – 8 = __.
Some of the video links below will take you to another school website, where the teachers have created short homework videos to help parents help their students. If you have questions on homework, refer to the number in the top right corner of the worksheet and then find the corresponding video link below.
Ex:

Lesson 1 Video Instruction
Lesson 2 Video Instruction
Lesson 3 Video Instruction
Lesson 4 Video Instruction
Lesson 5 Video Instruction
Lesson 6 Video Instruction
Lesson 7 Video Instruction
Lesson 8 Video Instruction
Lesson 9 Video Instruction
Lesson 10 Video Instruction
Lesson 11 Video Instruction
Lesson 12 Video Instruction
Lesson 13 Video Instruction
Lesson 14 Video Instruction
Lesson 15 Video Instruction
Lesson 16 Video Instruction
Lesson 17 Video Instruction
Lesson 18 Video Instruction
Lesson 19 Video Instruction
Lesson 20 Video Instruction
Lesson 21 Video Instruction
Lesson 22 Video Instruction
Lesson 23 Video Instruction
Lesson 24 Video Instruction
Lesson 25 Video Instruction
Lesson 26 Video Instruction
Lesson 27 Video Instruction
Lesson 28 Video Instruction
Lesson 29 Video Instruction

Lesson 1 HW Helper Video
Lesson 2 HW Helper Video
Lessons 3 & 4 HW Helper Video
Lesson 5 HW Helper Video
Lesson 6 HW Helper Video
Lessons 7 & 8 HW Helper Videos
Lesson 9 HW Helper Video
Lesson 10 HW Helper Video
Lesson 11 HW Helper Video
Lesson 12 & 13 HW Helper Video
Lesson 14 & 15 HW Helper Video
Lesson 16 HW Helper Video
Lesson 17 & 18 HW Helper Video
Lesson 19 HW Helper Video
Lesson 20 HW Helper Video
Lesson 21 HW Helper Video
Lesson 22 HW Helper Video
Lesson 23 HW Helper Video
Lesson 24 HW Helper Video
Lesson 25 HW Helper Video
Lesson 26 HW Helper Video
Lesson 27 HW Helper Video
Lesson 28 HW Helper Video
Lesson 29 HW Helper Video