1ST GRADE MATH VIDEOS

OPERATIONS AND ALGEBRAIC THINKING

A. Represent and solve problems involving addition and subtraction.

B. Understand and apply the properties of operations and the relationship between addition and subtraction.

C. Work with addition and subtraction equations.

Counting On to Add

1.OA.C.5

Add & Subtract within 20

Ready Math Lesson 1

Make a Ten to Add

1.OA.C.5

Add & Subtract using strategies with an emphasis on making 10

Ready Math Lesson 14

Make a 10 to Subtract - Frames and Counters

1.OA.C.5

Add and subtract within 20.

Ready Math Lesson 14

NUMBER AND OPERATIONS IN BASE TEN

A. Extend the counting sequence.

B. Understand place value.

C. Use place value understanding and properties of operations to add and subtract.

Breaking Apart Tens and Ones

1.NBT.B.2

Understand Place Value

Ready Math Lesson 17

MEASUREMENT AND DATA

A. Measure lengths indirectly and by iterating length units.

B. Work with time and money.

C. Represent and interpret data.

GEOMETRY

A. Reason about shapes and their attributes.