### 2: The student will use numbers and number relationships to acquire basic facts and determine the reasonableness of results.

#### 2.1: Integers

2.1.a: Compare and order positive and negative integers and describe their use in real-life situations (e.g., temperature, sea level, stock market fluctuations, football yardage).

2.1.b: Use the basic operations on integers to solve problems.

#### 2.2: Ratio, Proportion and Percents

2.2.a: Demonstrate the concept of ratio and proportion with models (e.g., similar geometric shapes, scale models).

2.2.b: Set up equivalent ratios, estimate and solve problems using ratio, proportions, and percents including percents greater than 100 and less than 1 (e.g., determine missing sides of similar figures, heart rate per minute, cost per pound, pay to hours worked overtime).

2.2.c: Solve percent application problems (e.g., discounts, tax, finding the missing value of percent/part/whole).

#### 2.3: Exponents

2.3.b: Build and recognize models of multiples to investigate squares and square roots (e.g., build rectangular arrays for numbers 1 to 100 and note which can be represented as squares).

2.3.c: Estimate the square root of a number (e.g., between two consecutive integers).

### 3: The student will apply the properties and relationships of plane geometry in a variety of contexts.

#### 3.1: Classifying Geometric Figures

3.1.a: Classify triangles according to their sides and angles.

3.1.b: Classify quadrilaterals according to their sides and angles (e.g., determine whether all squares are rectangles).

#### 3.3: Rectangular Coordinate System

3.3.a: Locate points on a plane in all four quadrants.

3.3.b: Identify geometric transformation of figures (rotations, translations, and reflections).

### 4: The student will use measurement to solve problems in a variety of contexts.

#### 4.1: Area and Perimeter

4.1.a: Develop area and perimeter concepts (e.g., use grids to estimate the area of irregular shapes).

4.1.b: Apply formulas to solve problems involving perimeter (circumference) and area of polygons and circles.

#### 4.2: Customary and Metric Measurements

4.2.a: Select and use appropriate tools for measurements in practical applications and make reasonable estimates of measurements in a particular situation using the appropriate unit.

### 5: The student will use probability to formulate and justify predictions from a set of data.

#### 5.3: Find all possible combinations and permutations involving a limited number of variables.

Correlation last revised: 2/10/2015

This correlation lists the recommended Gizmos for this state's curriculum standards. Click any Gizmo title below for more information.