1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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 real-world situations.

  16. 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 elapsed-time calculations.

  17. 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. 

  18. 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 real-world problems.

  19. Analyzing the Effects of the Changes in m and b on the Graph of y = mx + b

    • Resource ID: A1M4L8
    • Grade Range: 9–12
    • Subject: Math

    Given algebraic, graphical, or verbal representations of linear functions, the student will determine the effects on the graph of the parent function f(x) = x.