Counting
Counting with small numbers
Missing numbers between 0 and 120
Comparing numbers of objects
Comparing numbers on the number line
Addition and subtraction intro
What is addition? What is subtraction?
Getting to 10 by filling boxes
Add and subtract: pieces of fruit
Addition and subtraction within 10
Relate addition and subtraction
Relating addition and subtraction
Addition and subtraction word problems
Addition word problems within 10
Subtraction word problems within 10
Place value (tens and hundreds)
Comparing 2-digit numbers
Greater than and less than symbols
Comparing three-digit numbers
Addition and subtraction within 20
Addition and subtraction word problems: superheroes
Addition and subtraction word problems: gorillas
Word problems with “more” and “fewer”
Comparison word problems: marbles
Comparison word problems: roly-polies
Repeated addition: haircuts
Understanding place value when adding tens
Understanding place value when adding ones
Subtracting 1 vs. subtracting 10
Subtracting 1s using place value
Subtracting 10s using place value
Addition and subtraction within 100
Intro to addition with 2-digit numbers
Adding 2-digit numbers without regrouping 1
Adding 2-digit numbers without regrouping 2
Breaking apart 2-digit addition problems
Regrouping to add 1-digit number
Adding by making a group of 10
Intro to subtraction with 2-digit numbers
Subtracting 2-digit numbers without regrouping 1
Subtracting 2-digit numbers without regrouping (example 2)
Subtracting a 1-digit number with regrouping
Strategies for adding and subtracting within 100
Adding 53+17 by making a group of 10
Adding by making a group of 10
Strategies for adding 2-digit numbers
Addition and subtraction with number lines
Adding 2-digit numbers without regrouping 2
Subtracting 2-digit numbers without regrouping 1
Subtracting with regrouping (borrowing)
Adding and subtracting on number line word problems
Subtraction word problem: crayons
Addition word problem: horses
Subtraction word problem: snow
Word problems with “more” and “fewer” (within 100)
Subtraction word problem: basketball
Addition word problem: spots
Addition and subtraction missing value problems
Missing numbers in addition and subtraction
Adding 3-digit numbers (no regrouping)
Subtracting 1s, 10s, and 100s
Subtracting 1s, 10s, and 100s
Subtracting 1, 10, or 100
Subtracting 3-digit numbers (no regrouping)
Strategies for adding 2- and 3-digit numbers
Breaking apart 3-digit addition problems
Solving 3-digit addition in your head
Addition using groups of 10 and 100
Adding and subtracting on number line
Addition and subtraction within 1000
Measuring lengths with different units
Comparing and estimating length
Measuring length: golden statue
Making picture graphs and line plots
Measurement and data
Reading bar graphs: dog bones
Reading bar graphs: bikes
Creating picture and bar graphs
Making picture graphs and line plots
Telling time (labeled clock)
Telling time (unlabeled clock)
Cousin Fal’s shape collection
Cousin Fal’s shape collection
Equal parts of circles and rectangles