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|Mathematics Unit Plan – Learning Progression Guide |

|Course No. |27.09720 |Course Name |GSE Analytic Geometry |

|Grade |10 |Unit # |3 |Projected |4 weeks |

| | | | |Timeline | |

|Unit Name |Circles and Volume |

|Unit Overview |

|In this unit students will: |

|• Understand and Apply theorems about circles |

|• Find Arc Length and Area of Sectors of circles |

|• Explain Volume Formulas and Use them to solve problems |

|Unit Curriculum Map |

|Unit Standards |MGSE9-12.G.C.1 Understand that all circles are similar. |

| |MGSE9-12.G.C.2 Identify and describe relationships among inscribed angles, radii, chords, tangents, and secants. Include |

| |the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; |

| |the radius of a circle is perpendicular to the tangent where the radius intersects the circle. |

| |MGSE9-12.G.C.3 Construct the inscribed and circumscribed circles of a triangle, and prove properties of angles for a |

| |quadrilateral inscribed in a circle. |

| |MGSE9-12.G.C.4 Construct a tangent line from a point outside a given circle to the circle. |

| |MGSE9-12.G.C.5 Derive using similarity the fact that the length of the arc intercepted by an angle is proportional to the |

| |radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of |

| |a sector |

| |MGSE9-12.G.GMD.1 Give informal arguments for geometric formulas. |

| |a. Give informal arguments for the formulas of the circumference of a circle and area |

| |of a circle using dissection arguments and informal limit arguments. |

| |b. Give informal arguments for the formula of the volume of a cylinder, pyramid, and |

| |cone using Cavalieri’s principle. |

| |MGSE9-12.G.GMD.2 Give an informal argument using Cavalieri’s principle for the formulas for the volume of a sphere and |

| |other solid figures. |

| |MGSE9-12.G.GMD.3 Use volume formulas for cylinders, pyramids, cones, and spheres to solve problems. |

| |MGSE9-12.G.GMD.4 Identify the shapes of two-dimensional cross-sections of three-dimensional objects, and identify |

| |three-dimensional objects generated by rotations of two-dimensional objects. |

|Content Learning Progression # __1__ |

|Topic __1__ out of __2___ |Area and Volume Formulas for 2-D and 3-D shapes |

| |(2 weeks) |

|Standards in this learning progression: |MGSE9-12.G.GMD.1 |

| |MGSE9-12.G.GMD.2 |

| |MGSE9-12.G.GMD.3 |

| |MGSE9-12.G.GMD.4 |

|Connections to other standards |1. Make sense of problems and persevere in solving them. |

|(Standards for Mathematical Practice, |2. Reason abstractly and quantitatively. |

|Literacy, etc: |3. Construct viable arguments and critique the reasoning of others. |

| |4. Model with mathematics. |

| |5. Use appropriate tools strategically. |

| |6. Attend to precision. |

| |7. Look for and make use of structure. |

| |8. Look for and express regularity in repeated reasoning. |

| | |

| |Resource 1: |

| |Resource 2: |

|Terms students should learn and use with|apothem, Cavalieri’s Principle, center of a circle, center of a polygon, center of a sphere, central angle of a regular |

|precision in this unit and progression: |polygon, circle, circumference, cross-section, cylinder, diameter, great circle, hemisphere, pi, prism, radius, radius of a|

| |sphere, sphere, volume |

| | |

| |GaDOE Formula Sheet: |

| |Area: |

| |Rectangle/Parallelogram [pic] |

| |Triangle [pic] |

| |Circle [pic] |

| | |

| |Circumference: |

| |[pic] [pic] [pic] |

| | |

| |Volume: |

| |Rectangular Prism/Cylinder [pic] |

| |Pyramid/Cone [pic] |

| |Sphere [pic] |

|Materials and tools students should use |Calculator, measuring tape, string, ruler, circular objects (used to model the relationship between circumference and |

|with precision in this unit and |diameter, i.e. pi), play dough, fishing line, 3-dimensional models of prisms, cylinders, and spheres |

|progression: | |

|Know – Understand – Do |

|(KUD) |

|By the end of this learning progression, students will be able to… |

|UNDERSTAND |

|Big Ideas, Essential Understandings, or Generalizations |

|Perimeter, Area, and Volume of Geometric shapes can be described by equations, making algebraic manipulation into a tool for geometric understanding, modeling, and|

|proof. |

|Geometric transformations of shape (composing, decomposing or slicing) correspond to algebraic changes in their equations. |

|KNOW |DO |

|Facts and Procedural Knowledge |Skills |

|Know strategies for dissection and partitioning that support the visualizations |Develop and apply the formulas for the area and circumference of a circle. |

|necessary to build informal arguments. |Develop and apply the formula for area of a regular polygon. |

| |Identify the cross section of prisms and cylinders |

| |Learn and apply the formula for the volume of a prism |

| |Learn and apply the formula for the volume of a cylinder |

| |Learn and apply the formula for volume of a sphere |

| |Learn and apply the formula for surface area of a sphere |

|Content Learning Progression # __2__ |

|Topic __2__ out of __2___ |Circles |

| |(2 weeks) |

|Standards in this learning progression: |MGSE9-12.G.C.1 |

| |MGSE9-12.G.C.2 |

| |MGSE9-12.G.C.3 |

| |MGSE9-12.G.C.4 |

| |MGSE9-12.G.C.5 |

| | |

|Connections to other standards |1. Make sense of problems and persevere in solving them. |

|(Standards for Mathematical Practice, |2. Reason abstractly and quantitatively. |

|Literacy, etc: |3. Construct viable arguments and critique the reasoning of others. |

| |4. Model with mathematics. |

| |5. Use appropriate tools strategically. |

| |6. Attend to precision. |

| |7. Look for and make use of structure. |

| |8. Look for and express regularity in repeated reasoning. |

| | |

| |Resource 1: |

| |Resource 2: |

|Terms students should learn and use with|adjacent arcs, arc, Arc Addition Postulate, arc length, arc measure, central angle, chord, common tangent, concentric |

|precision in this unit and progression: |circles, congruent arcs, congruent circles, exterior of a circle, inscribed, inscribed angle, inscribed chord, inscribed |

| |polygon, intercepted arc, interior of a circle, major arc, minor arc, point of tangency, radian, secant segment, sector, |

| |semicircle, subtend, tangent circles, tangent line |

|Materials and tools students should use |Protractor, straightedge, compass, calculator |

|with precision in this unit and | |

|progression: | |

|Know – Understand – Do |

|(KUD) |

|By the end of this learning progression, students will be able to… |

|UNDERSTAND |

|Big Ideas, Essential Understandings, or Generalizations |

|Properties of Circles can be described by theorems that integrate algebraic and geometric understanding, modeling, and proof. |

|Properties of Circles can be used to derive an understanding of the radian measure of an angle |

|KNOW |DO |

|Facts and Procedural Knowledge |Skills |

|Know that all circles are similar. |Identify tangents, secants, and chords |

|Know strategies for geometric constructions. |Use properties of tangents to solve problems |

|Know theorems about circles |Apply properties of chords |

|Know how the application of proportional reasoning is used to develop the concept|Apply properties of arcs |

|of radian measure. |Find the area of sectors |

| |Find arc length |

| |Find the area of a segment |

| |Find the measure of an inscribed angle |

| |Use inscribed angles and their properties to solve problems |

| |Use proportions to convert angle measures from degrees to radians |

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