1st Grade Mathematics Missouri Learning Standards*
According to the Missouri Learning Standards, 1st grade Mathematics instructional time should focus on five critical areas.
NUMBER SENSE
Video: Number grid (4: 57 mins)
Video: Binary Numbers (10:33 mins)
Video: Skip counting by 5 example (2:04 mins)
Video: Counting by tens examples (2:35 mins)

I can count to 120, starting at any number less than 120.

I can read and write numerals and represent a number of objects with a written numeral.

I can count backward from a given number between 20 and 1.

I can count by 5s to 100 starting at any multiple of five.
NUMBERS AND OPERATIONS BASE TEN
Video: Introduction to place value (5:58 mins)
Video: Place value example with 25 (2;54 mins)
Video: Place value example with 42 (4:18 mins)
Video: Understanding place value when adding ones (2:35 mins)
Video: Understanding place value while adding (3:1
Video: Equal sign (4:55 mins)
Video: Greater than and less than symbols (5:03 mins)

I can understand that 10 can be thought of as a bundle of 10 ones – called a “ten.”

I can understand twodigit numbers are composed of ten(s) and one(s).

I can compare two twodigit numbers using the symbols >, = or <.

I can count by 10s to 120 starting at any number

I can add within 100.

I can calculate 10 more or 10 less than a given number mentally without having to count.

I can add or subtract a multiple of 10 from another twodigit number, and justify the solution.
RELATIONSHIPS AND ALGEBRAIC THINKING
Video: Basic addition (7:42 mins)
Video: Addition 2 (12:25 mins)
Video: Addition 3 (8:56 mins)
Video: Basic Subtraction (8:31 mins)
Video: Subtraction 2 (12:31 mins)
Video: Subtraction 3: Introduction to Borrowing or Regrouping (18;25 mins)
Video: Making 5 (4:05 mins)
Video: Adding to 10 (1:59 mins)
Video: Adding 8 + 7 (3:18 mins)
Video: Adding 7 + 6 (3:52 mins)
Video: Equal sign (4:55 mins)
Video: Greater than and less than symbols (5:03 mins)

I can use addition and subtraction within 20 to solve problems.

I can solve problems that call for addition or three whole numbers whose sum is within 20.

I can develop the meaning of the equal sign and determine if equations involving addition and subtraction are true or false.

I can determine the unknown whole number in an addition or subtraction equation relating three whole numbers.

I can use properties as strategies to add and subtract.

I can demonstrate that subtraction can be solved as an unknownaddend problem.

I can add and subtract within 20.

I can demonstrate fluency with addition and subtraction within 10.
GEOMETRY AND MEASUREMENT
Video: Cousin Fal’s shape collection (4:18 mins)
Video: Recognizing shapes (6:08 mins)
Video: Compose shapes (2:03 mins)
Video: Identifying Geometric Solids (3:26 mins)
Video: Measuring lengths with different units (2:53 mins)
Video: Measuring lengths 2 (4:30 mins)
Video: Length word problems (5:49 mins)
Video: Telling time exercise example 1 (2:50 mins)
Video: Telling time exercise example 2 (2:15 mins)
Video: Counting American coins (4:30 mins)

I can distinguish between defining attributes versus nondefining attributes; build and draw shapes.

I can compose and decompose two and threedimensional shapes to build an understanding or partwhole relationships.

I can recognize two and three dimensional shapes from different perspectives and orientations.

I can partition circles and rectangles into two or four equal shares, and describe the shares and the wholes verbally.

I can order three or more objects by length.

I can compare the lengths of two objects indirectly by using a third object.

I can demonstrate the ability to measure length or distance using objects.

I can tell and write time in hours and halfhours using analog and digital clocks.

I can know the value of a penny, nickel, dime and quarter.
DATA AND STATISTICS
Video: Count by category (0:43 mins)
Video: Picture graphs (2:47 mins)
Video: Reading bar graph examples (2:56 mins)

I can collect, organize and represent data with up to three categories.

I can draw conclusions from object graphs, picture graphs, Tcharts and tallies.