# Math: Developing Geometry and Fraction Concepts

### Suggested Time Frame: 25 Instructional Days

##### Focus TEKS

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

Measuring Time

• 1.7E  Tell time to the hour and half hour using analog and digital clocks
##### Numeracy TEKS

Counting Patterns

• 1.5B  Skip count by twos, fives, and tens to determine the total number of objects up to 120 [100 in this unit] in a set;

• 1.3D Apply basic fact strategies to add and subtract within 20, including making 10 and decomposing a number leading to a 10 [Use Doubles addition fact strategy in this unit]
##### Spiral Review TEKS

Addition and Subtraction [Solving, Explaining, and Representing]

• 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 [Introduce CGI problem types JCU, SCU, and PPW-PU; include problems about data and length as well]
• Explaining
• 1.3E Explain strategies used to solve addition and subtraction problems up to 20 using spoken words, objects, pictorial models, and number sentences
• Representing
• 1.3F Generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20
• 1.5D Represent word problems involving addition and subtraction of whole numbers up to 20 using concrete and pictorial models and number sentences

Counting Collections

• 1.5A Recite numbers forward and backward from any given number between 1 and 120 [100 in this unit]
• 1.5B  Skip count by twos, fives, and tens to determine the total number of objects up to 120 [100 in this unit] in a set;