• Home
  • /
  • Third Grade
  • /
  • Math (TAG): Geometry and Perimeter, Area, and Angle Measurement

Math (TAG): Geometry and Perimeter, Area, and Angle Measurement

Suggested Time Frame: 21 Instructional Days

        

Focus TEKS

2- and 3-D Figures

  • 3.6A  classify and sort two- and three-dimensional figures, including cones, cylinders, spheres, triangular and rectangular prisms, and cubes, based on attributes using formal geometric language R
  • 4.6D  classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines or the presence or absence of angles of a specified size R [Angles identified by type – acute, right, obtuse]
    • 3.6B use attributes to recognize rhombuses, parallelograms, trapezoids, rectangles, and squares as examples of quadrilaterals and draw examples of quadrilaterals that do not belong to any of these subcategories S
    • 4.6A identify points, lines, line segments, rays, angles, and perpendicular and parallel lines; – S
    • 4.6B identify and draw one or more lines of symmetry, if they exist, for a two-dimensional figure S
    • 4.6C apply knowledge of right angles to identify acute, right, and obtuse triangles S

Perimeter and Area Measurement

  • 3.6D  decompose composite figures formed by rectangles into non-overlapping rectangles to determine the area of the original figure using the additive property of area S
  • 3.6E  decompose two congruent two-dimensional figures into parts with equal areas and express the area of each part as a unit fraction of the whole and recognize that equal shares of identical wholes need not have the same shape S
  • 3.7B  determine the perimeter of a polygon or a missing length when given perimeter and remaining side lengths in problems R

Perimeter and Area Formulas

  • 4.5D solve problems related to perimeter and area of rectangles where dimensions are whole numbers. – R RC3
    • 4.5C use models to determine the formulas for the perimeter of a rectangle (l + w + l + w or 2l + 2w), including the special form for perimeter of a square (4s) and the area of a rectangle (l x w); – NT
Computational Fluency TEKS

Multiplication and Division Facts; Two-Digit Multiplication Representations and Computation

  • 3.4F recall facts to multiply up to 10 by 10 with automaticity and recall the corresponding division facts. S
  • 4.4B  determine products of a number and 10 or 100 using properties of operations and place value understandings S
  • 4.4C represent the product of 2 two-digit numbers using arrays, area models, or equations, including perfect squares through 15 by 15 S
Spiral Review TEKS

Reviewing Data Analysis and Place Value Relationships

  • 3.8A summarize a data set with multiple categories using a frequency table, dot plot, pictograph, or bar graph with scaled intervals R
  • 3.8B solve one- and two-step problems using categorical data represented with a frequency table, dot plot, pictograph, or bar graph with scaled intervals S
  • 4.9B solve one- and two-step problems using data in whole number, decimal, and fraction form in a frequency table, dot plot, or stem-and leaf plot [whole numbers only]  S
  • 4.2A interpret the value of each place-value position as 10 times the position to the right and as one-tenth of the value of the place to its left; – S