# What should I Learn?

### Operations and Algebraic Thinking

• How to solve addition and subtraction word problems in situations of adding to, taking from, putting together, taking apart, and comparing (e.g., a taking from situation would be: “Five apples were on the table. I ate some apples. Then there were three apples. How many apples did I eat?”).

• How to add fluently with a sum of 10 or less, and accurately subtract from a number 10 or less (e.g., 2 + 5, 7 – 5).

• Understand the relationship between addition and subtraction.

### Number and Operations in Base Ten

• How to understand what the digits mean in two-digit numbers (place value).

• How to use my understanding of place value and properties of operations to add and subtract (e.g., 38 + 5, 29 + 20, 64 + 27, 80 – 50).

• How to understand and identify the value of pennies, nickels and dimes.

### Measurement and Data

• How to measure lengths of objects by using a shorter object as a unit of length.

• How to tell and write time.

### Geometry

• How to make composite shapes by joining shapes together, and dividing circles and rectangles into halves or fourths.

### Operations and Algebraic Thinking

• Solve challenging addition and subtraction word problems with one or two steps (e.g., a “one-step” problem would be: “Lucy has 23 fewer apples than Julie. Julie has 47 apples. How many apples does Lucy have?”).

• Fluently add with a sum of 20 or less (e.g., 11 + 8); fluently subtract from a number 20 or less (e.g., 16 – 9); and know all sums of one-digit numbers from memory by the end of the year.

• Work with equal groups of objects to gain foundations for multiplication.

### Number and Operations in Base Ten

• Understand what the digits mean in three-digit numbers (place value).

• Use an understanding of place value to add and subtract three-digit numbers (e.g., 811 – 367); add and subtract two-digit numbers fluently (e.g., 77 – 28).

### Measurement and Data

• Solve addition and subtraction word problems involving length (e.g., “The pen is 2 cm longer than the pencil. If the pencil is 7 cm long, how long is the pen?”).

• Tell time.

• Count money.

### Geometry

• Build, draw, and analyze 2-D and 3-D shapes to develop foundations for area, volume, and geometry in later grades.

• Divide shapes into equal shares to build the foundations for fractions in later grades.

# FREE Top Apps and Sites

#### Prankster Planet

The Pranksters are reversing all the words on Earth with their dastardly Reverse-a-Balls! Complete a series of eight quests to turn off all of the Reverse-a-Ball machines and save the words on Earth!

• Side-scrolling play and exploration in a 2D platformer world
• 8 unique quests with math curriculum woven throughout
• An avatar creator with many customization options
• Collectible rewards
• Math learning fun with graphs, charts and data analysis challenges

#### Greg Tang Math

Greg Tang Math strives to provide unparalleled math lessons for students.