
Solving Systems of Equations Using Matrices
 Resource ID: A2M2L8
 Grade Range: 9–12
 Subject: Math
Given a system of up to three linear equations, the student will solve the system using matrices with technology.

Formulating Systems of Inequalities
 Resource ID: A2M2L2
 Grade Range: 9–12
 Subject: Math
Given a contextual situation, the student will formulate a system of two linear inequalities with two unknowns to model the situation.

Solving Systems of Equations Using Substitution
 Resource ID: A2M2L5a
 Grade Range: 9–12
 Subject: Math
Given a system of two equations where at least one of the equations is linear, the student will solve the system using the algebraic method of substitution.

Solving Systems of Equations Using Elimination
 Resource ID: A2M2L5b
 Grade Range: 9–12
 Subject: Math
Given a system of two equations where at least one of the equations is linear, the student will solve the system using the algebraic method of elimination.

Using Logical Reasoning to Prove Conjectures about Circles
 Resource ID: GM1L19
 Grade Range: 9–12
 Subject: Math
Given conjectures about circles, the student will use deductive reasoning and counterexamples to prove or disprove the conjectures.

Generalizing Geometric Properties of Ratios in Similar Figures
 Resource ID: GM2L3
 Grade Range: 9–12
 Subject: Math
Students will investigate patterns to make conjectures about geometric relationships and apply the definition of similarity, in terms of a dilation, to identify similar figures and their proportional sides and congruent corresponding angles.

Making Conjectures About Circles and Segments
 Resource ID: GM4L16
 Grade Range: 9–12
 Subject: Math
Given examples of circles and the lines that intersect them, the student will use explorations and concrete models to formulate and test conjectures about the properties and relationships among the resulting segments.

Determining Area: Regular Polygons and Circles
 Resource ID: GM4L1
 Grade Range: 9–12
 Subject: Math
The student will apply the formula for the area of regular polygons to solve problems.

Making Conjectures About Circles and Angles
 Resource ID: GM4L16a
 Grade Range: 9–12
 Subject: Math
Given examples of circles and the lines that intersect them, the student will use explorations and concrete models to formulate and test conjectures about the properties of and relationships among the resulting angles.

Solving Problems With Similar Figures
 Resource ID: GM5L2
 Grade Range: 9–12
 Subject: Math
Given problem situations involving similar figures, the student will use ratios to solve the problems.

Connecting Postulates, Definitions, and Theorems
 Resource ID: GM1L1
 Grade Range: 9–12
 Subject: Math
The student will distinguish the difference between undefined terms, definitions, postulates, conjectures, and theorems. 
Making and Verifying Conjectures about Angles
 Resource ID: GM1L7
 Grade Range: 9–12
 Subject: Math
Given the relationship(s) among a set of angles, the student investigates the patterns and makes conjectures about the geometric relationships, including angles formed by parallel lines cut by a transversal.

Determining Area: Sectors of Circles
 Resource ID: GM4L3
 Grade Range: 9–12
 Subject: Math
Students will use proportional reasoning to develop formulas to determine the area of sectors of circles. Students will then solve problems involving the area of sectors of circles.

Graphing Conic Sections: Ellipses
 Resource ID: PCM1L2
 Grade Range: 9–12
 Subject: Math
Given an equation, the student will use parameter changes to graph an ellipse and to identify the changes in the graph of an ellipse.

Graphing Conic Sections: Hyperbolas
 Resource ID: PCM1L3
 Grade Range: 9–12
 Subject: Math
Given an equation, the student will use parameter changes to graph a hyperbola and to identify the changes in the graph of a hyperbola.

It’s All About the Bend, No Breaking
 Resource ID: TXLS052
 Grade Range: 1
 Subject: Math
Students will experiment with choosing tools to measure around a previously created pet habitat in preparation for choosing appropriately sized food bowls. Students will use a graphic organizer to record tools chosen and why they were or were not a good choice for continuous measurement.

Area of Composite Figures
 Resource ID: TXLS039
 Grade Range: 7
 Subject: Math
Student groups will work collaboratively using the appropriate formulas to find the area of simple figures and combine the area of each shape to find the area of composite figures in realworld situations.

Time Using the Z Method
 Resource ID: TXLS042
 Grade Range: 4
 Subject: Math
In small groups, students will calculate elapsed time using the Z method. This method helps students better understand the importance of start time and end time when performing elapsedtime calculations.

Solving Linear Equations and Inequalities
 Resource ID: A1M5L4
 Grade Range: 9–12
 Subject: Math
When given a table, equation or verbal description students will solve one and two variable equations and inequalities using algebraic steps or graphing methods.

Applying Geometric Probability
 Resource ID: GM4L6
 Grade Range: 9–12
 Subject: Math
The student will find the area of polygons and circles. Then, the student will use probability to solve realworld problems.