Apply concepts to create inch rulers; measure lengths using inch rulers. Partition circles and rectangles into equal parts, and describe those parts as halves, thirds, or fourths. Add within using properties of addition to make a ten. Use mental strategies to relate compositions of 10 tens as 1 hundred to 10 ones as 1 ten. Interpret equal shares in composite shapes as halves, thirds, and fourths. Describe two-dimensional shapes based on attributes.
Decompose to subtract from a ten when subtracting within and apply to one-step word problems. Use number bonds to break apart three-digit minuends and subtract from the hundred. Subtract multiples of and some tens within 1, Video Lesson 10 , Lesson Use and explain the totals below written method using words, math drawings, and numbers. Problem Solving with Categorical Data Standard: Add and subtract multiples of including counting on to subtract.
Solve elapsed time problems involving whole hours and a half hour.
Use math drawings to represent the composition when adding a two-digit to a three-digit addend. Solve two-step word problems within Use math drawings to represent subtraction with and without decomposition and relate drawings to a written method. Compose arrays from rows and columns, and count to find the homeework using objects.
Make number bonds of ten. Represent two-digit sums and differences involving length by using the ruler as a number line. Describe a whole by the number of equal parts including 2 halves, 3 thirds, and homeaork fourths. Video Lesson 2Lesson 3: Build, identify, and analyze two-dimensional shapes with specified attributes. Video Lesson 3Lesson 4: Apply concepts to create unit rulers and measure lengths using unit rulers.
Video Lesson 9Lesson Relate manipulative representations to the addition algorithm.
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Use attributes to identify and draw different quadrilaterals including rectangles, rhombuses, parallelograms, and trapezoids. Make number bonds through ten with a subtraction focus and apply to one-step word problems.
Subtract from multiples of and from numbers with zero in the tens place. Composite Shapes and Fraction Concepts Standard: Represent subtraction with and without the decomposition of 1 ten as 10 ones with manipulatives.
Use math drawings to represent equal groups, and relate to repeated addition. Please submit your feedback or enquiries via our Feedback page. Combine shapes to create a composite shape; create a new shape from composite shapes. Recognize that equal parts of an identical rectangle can have different shapes. Decompose to subtract from a ten when lewson within 20 and apply to one-step word problems.
Strategies for Decomposing Tens and Hundreds Standard: Measure various objects using centimeter rulers and meter sticks. Decompose to subtract from a ten when subtracting within and apply to one-step word problems.
Use math drawings to partition a rectangle with square tiles, and relate to repeated addition.
Use manipulatives to represent subtraction with decompositions of 1 hundred as 10 tens and 1 ten as 10 ones. Draw a bar graph to represent a given data set. Video Lesson 10Lesson Finding 1, 10, and More or Less than a Number Standard: Video Lesson 14Lesson Read and write numbers within 1, after modeling with number disks.
Apply conceptual understanding of measurement by solving two-step word problems Video.