Pre-Algebra Unit 3 Videos—Lessons 61-90

  • Unit 1 Videos

    Lessons 1-30  

  • Unit 2 Videos

    Lessons 31-60  

  • Unit 3 Videos

    Lessons 61-90  

  • Unit 4 Videos

    Lessons 91-120  

Videos

Lesson 61 | Percent Increase and Decrease

Lesson 62 | Calculating Interest

Lesson 63 | Simple Probability

Lesson 64 | Compound Probability

Lesson 65 | Ratios and Unit Rates

Lesson 66 | Proportions

Lesson 67 | Measurement Systems

Lesson 68 | Unit Conversions and Unit Multipliers

Lesson 69 | Scales and Scale Factors

Lesson 70 | Basic Geometry Terms

Lesson 71 | Angle Relationships and Transversals

Lesson 72 | Properties of Triangles

Lesson 73 | Polygons and Interior Angles

Lesson 74 | Congruence and Similarity in Figures

Lesson 75 | No Video

Lesson 76 | Proportions with Similar Figures

Lesson 77 | Drawings and Constructions

Lesson 78 | Circles, Circumference, and Perimeter

Lesson 79 | Arcs, Sectors, and Angles in a Circle

Lesson 80 | Area of Polygons and Circles

Lesson 81 | Area of Composite Figures

Lesson 82 | Surface Area of Polyhedra

Lesson 83 | Surface Area of Other Solids

Lesson 84 | Volume of Prisms and Cylinders

Lesson 85 | Volume of Pyramids, Cones, and Spheres

Lesson 86 | Volume of Composite Solids

Lesson 87 | Solving One-Step and Two-Step Inequalities

Lesson 88 | No Video

Lesson 89 | No Video

Lesson 90 | No Video