Math: Applying Inequality and Comparison Subtraction to Measurement and Data

Collect and Display Data

• 1.8A Collect, sort, and organize data in up to three categories using models/representations such as tally marks or T-charts
• 1.8B Use data to create picture and bar-type graphs

Comparing Numbers to 99

• 1.2G represent the comparison of two numbers to 100 [99] using the symbols >, <, or =.
  • 1.2D  Generate a number that is greater than or less than a given whole number up to 120 (99)
  • 1.2E  Use place value to compare whole numbers up to 120 (99) using comparative language
  • 1.5E  understand that the equal sign represents a relationship where expressions on each side of the equal sign represent the same value(s);

Subtraction (Focus is on comparison subtraction: How many more…? What’s the difference between…?)

• Problem Solving
  • 1.3B use objects and pictorial models to solve word problems involving joining, separating, and comparing sets within 20 and unknowns as any one of the terms in the problem such as 2 + 4 = [ ]; 3 + [ ] = 7; and 5 = [ ] – 3;
    • 1.7D describe a length to the nearest whole unit using a number and a unit; [Reinforce measuring as students solve comparison subtraction problems. What is the difference of the two lengths you measured?]
    • 1.8C Draw conclusions and generate and answer questions using information from picture and bar-type graphs [Solve comparison problems based on data in picture and bar-type graphs.]
  • 1.3F generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20.
• Representing and Explaining
  • 1.3E  explain strategies used to solve addition and subtraction problems up to 20 using spoken words, objects, pictorial models, and number sentences
  • 1.5D represent word problems involving addition and subtraction of whole numbers up to 20 using concrete and pictorial models and number sentences;

Counting Coins

• 1.4C  Use relationships to count  by twos, fives, and tens- to determine the value of a collection of pennies, nickels and/or dimes

Subtraction Fact Strategies

• 1.3D Apply basic fact strategies to add and subtract within 20, including making 10 and decomposing a number leading to a 10 [Think Addition and Count Back subtraction strategies]

Attributes of 2-D Figures

• 1.6A  Classify and sort regular and irregular two-dimensional shapes based on attributes using informal geometric language
  • 1.6B Distinguish between attributes that define a two-dimensional or three-dimensional figure and attributes that do not define the shape
  • 1.6C  Create two-dimensional figures, including circles, triangles, rectangles, and squares as special rectangles, rhombuses, and hexagons
• 1.6D Identify two-dimensional shapes, including circles, triangles, rectangles, and squares as special rectangles, rhombuses, and hexagons, and describe their attributes using formal geometric language
  • 1.6F  Compose two-dimensional shapes by joining two, three, or four figures to produce a target shape in more than one way if possible

Attributes of 3-D Figures

• 1.6E Identify three-dimensional solids, including spheres, cones, cylinders, rectangular prisms [including cubes], and triangular prisms, and describe their attributes using formal geometric language
  • 1.6B Distinguish between attributes that define a two-dimensional or three-dimensional figure and attributes that do not define the shape

Fair Shares

• 1.6G  Partition two-dimensional figures into two and four fair shares or equal parts and describe the parts using words [including circular clock face]
  • 1.6H  Identify examples and non-examples of halves and fourths

Counting Collections

• 1.5A Recite numbers forward and backward from any given number between 1 and 120
• 1.5B  Skip count by twos, fives, and tens to determine the total number of objects up to 120 in a set;