Compare two or more three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols. Build, read, write (in standard and expanded form), and represent three-digit numbers using base-10 blocks and symbols.

Build, read, write (in standard and expanded form), and represent three-digit numbers using base-10 blocks and symbols. Describe the value of a digit, including 0, based on its place in the number.

Practice time! Build, read, write (in standard and expanded form), and represent three-digit numbers using base-10 blocks and symbols. Describe the value of a digit based on its place in the number.

Moby tells us about shooting stars; Wimee and friends write a story about a falling moon; Mr. Brad translates the key story words in Swahili and talks about dark sky parks; Ms. Lisa shares a book about a young aspiring astronaut and learns about meteor showers; and Wimee interviews neighboring plants about what they each like about stars!

Figure out if there are enough. Engage in a Number Talk to find "how many" and to answer a secret question. Play a fun "4 in a row" game with numbers and arrangements.

Solve comparison word problems using data we get from questions like, Which meal is your favorite, breakfast, lunch or dinner? Play a game to use data to determine if a statement is true or false. Engage in a Number Talk to find "how many" and to answer a secret question.

Written Number with Groups

Different Types of Word Problems

Add & Subtract within 100

Write Numbers to Show How Many

Match Story Problems to Equations

Match Strategies to Expression

Find area of figures with missing side lengths. How will you decompose the figures into rectangles to find the area? Engage in a Number Talk and compare your strategies with others.

Count birds to tell if Dotson made a Mystery Math Mistake when representing the number of birds using a 10-frame [...]

Represent 8 using a number bond and 10-frame to help solve a Mystery Math Mistake. Use Notice and Wonder to [...]

Warm up with a Mystery Math Mistake to hunt for the mistake in adding two 2-digit numbers using a decomposition [...]

Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Find Which One [...]

Count animals to tell if Dotson made a Mystery Math Mistake when representing the number of animals using a 10-frame [...]

Represent 10 using a number bond and 10-frame to help solve a Mystery Math Mistake. Use Notice and Wonder with [...]

Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Find Which One [...]

Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Use visual models [...]

Represent 6 with a 10-frame, dot card, and Rekenrek (counting buddy) to tell if Dotson made a Mystery Math Mistake. [...]

Represent 10 using a number bond and 10-frame with a missing addend. Use Notice and Wonder with a 10-frame, connecting [...]

Warm up with a Mystery Math Mistake as you add two 3-digit numbers using a partial sums strategy. Use strategies [...]

Use a 10-frame and Rekenrek (counting buddy) to tell if Dotson made a Mystery Math Mistake building "one less." Represent [...]

Represent a teen number using a number bond to solve a Mystery Math Mistake. Use Notice and Wonder with a [...]

Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Think through creating [...]

Warm up with a Mystery Math Mistake as you add two 3-digit numbers using a partial sums strategy. Use a [...]

Help Dotson count birds and help Mrs. Gray create towers for numbers and put them in order from 1 to 10.

Can you help Dotson count the farm animals?

Join Mrs. Gray for a Mystery Math Mistake. Dotson needs your help with making sure all of his ten frames are less than his focus number.

Join Mrs. Gray for a Mystery Math Mistake. Dotson needs your help with making sure all of his ten frames are more than his focus number.

Join Mrs. Gray for a Mystery Math Mistake. Dotson needs your help with ordering numbers.

Join Mrs. Gray for a Mystery Math Mistake. Dotson needs your help with building one more.

Join Mrs. Gray for a Mystery Math Mistake. Dotson needs your help with building one less.

Can you help dotson with his counting collection?

Look closely to see if you can find D.C.'s error in his addition.

Look closely to see if you can find D.C.'s error in his addition.

Look closely to see if you can find D.C.'s error in his addition.

Join Mrs. Markavich for a Mystery Math Mistake with her pal Value Pak! They need your help to with figuring out if their equation is balanced.

Mrs. Markavich and Value Pak need your help to decompose numbers by place value in their number bonds.

Value Pak needs your help with decomposing teen number, can you help?

Help D.C. find the missing addends in his number bonds.

Dotson needs your help with his number bonds showing different ways to make 10.

Can you find an error in Springling's open number line?

Can you find an error in Springling's open number line she used to subtract?

See if you can figure out where D.C.'s mistake is.

See if you can figure out where D.C.'s mistake is.

Abracus needs your help to figure out where the error is in his addition problem!

Abracus needs your help to figure out where is error is in his addition problem!