FIRST GRADE

Unit 1: Adding, Subtracting, and Working With Data

Unit Videos

Unit 2: Addition and Subtraction Story Problems

Unit Videos

Sub-Unit 1 – Representing and Solving Add To, Change Unknown Story Problems
Sub-Unit 2 – Using Addition or Subtraction to Find an Unknown Part of a Total Amount
Sub-Unit 3 – Solving Compare, Difference Unknown Problems
Sub-Unit 4 – Making Sense of Story Problems With Different Questions

Unit 3: Adding and Subtracting Within 20

Unit Videos

Sub-Unit 1 – Finding a Difference Using the Relationship Between Addition and Subtraction
Sub-Unit 2 – Using the Structure of Teen Numbers to Find Missing Addends
Sub-Unit 3 – Breaking Apart Addends to Make 10 When Adding
Sub-Unit 4 – Subtracting From Teen Numbers in Parts to Get to 10

Unit 4: Numbers to 99

Unit Videos

Sub-Unit 1 – Adding a Ten to and Subtracting a Ten From Multiples of 10
Sub-Unit 2 – Representing and Writing Two-Digit Numbers
Sub-Unit 3 – Comparing Two-Digit Numbers
Sub-Unit 4 – Representing the Same Two-Digit Number With Different Amounts of Tens and Ones

Unit 5: Adding Within 100

Unit Videos

Sub-Unit 1 – Adding a Number of Tens or Ones to a Two-Digit Number
Sub-Unit 2 – Adding a Two-Digit Number and a One-Digit Number When Composing a Ten is Necessary
Sub-Unit 3 – Adding a Two-Digit Number and a Two-Digit Number When Composing a Ten is Necessary

Unit 6: Measuring Lengths of Up to 120 Length Units

Unit Videos

Sub-Unit 1 – Measuring Length Using Non-Standard Units
Sub-Unit 2 – Writing and Interpreting Lengths Between 100 and 120 Length Units
Sub-Unit 3 – Represent and Solve Take From and Add To Story Problems With Unknowns in All Positions

Unit 7: Geometry and Time

Unit Videos

Sub-Unit 1 – Identifying Defining Attributes of Rectangles, Squares, and Triangles
Sub-Unit 2 – Partitioning Circles and Rectangles Into Halves and Fourths
Sub-Unit 3 – Using the Hour Hand to Tell Time to the Hour and Half Hour

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