Topicm0b529835e6fd5261_1528449000663_0Topic

right prismright prismright prism and its properties. Relations between values in a prims

Levelm0b529835e6fd5261_1528449084556_0Level

Third

Core curriculumm0b529835e6fd5261_1528449076687_0Core curriculum

X. Stereometry.

The basic level. The student:

3. Identifies angles between line segments in prisms and pyramids (for example, between edges, edges
and diagonals) and angles between sides and calculates these angles;

5. Identifies the figure of the given cross‑section of the prism by a plane;

6. Calculates the volume and the total surface area of prisms, pyramids, cylinders, cones and spheres, using trigonometry and learnt theorems.

Timingm0b529835e6fd5261_1528449068082_0Timing

45 minutes

General objectivem0b529835e6fd5261_1528449523725_0General objective

Choosing and creating mathematical models to solve practical and theoretical problems.

Specific objectivesm0b529835e6fd5261_1528449552113_0Specific objectives

1. Identifying angles between line segments in prisms and pyramids (for example, between edges, edges and diagonals) and angles between sides and calculating these angles; identifying the figure of the given cross‑section of the prism by a plane.

2. Calculating the volume and the total surface area of prisms, also using trigonometry and learnt theorems.

3. Communicating in English, developing basic mathematical, computer and scientific competences, developing learning skills.

Learning outcomesm0b529835e6fd5261_1528450430307_0Learning outcomes

The Student:

- identifies angles between line segments in prisms and pyramids (for example, between edges, edges
and diagonals) and angles between sides and calculates these angles; identifies the figure of the given cross‑section of the prism by a plane,

- calculates the volume and the total surface area of prisms, also using trigonometry and learnt theorems.

Methodsm0b529835e6fd5261_1528449534267_0Methods

1. Flipped classroom.

2. Situational analysis.

Forms of workm0b529835e6fd5261_1528449514617_0Forms of work

1. Work in pairs.

2. Group work.

Lesson stages

Introductionm0b529835e6fd5261_1528450127855_0Introduction

Students will work using the flipped classroom method.

In order to do that, they revise information about prisms at home. They can use information from the site www.epodreczniki.pl.

Procedurem0b529835e6fd5261_1528446435040_0Procedure

The teacher divides students into four groups. The task of each group is to present information prepared
at home.

Task for groups

Based on information prepared earlier, make a poster illustrating information about the following subject.

Group 1

Right prismright prismRight prism – built, properties, kinds.

Group 2

Line segments and angles in prisms.

Group 3

Cross‑sections of prisms.

Group 4

The total surface area and volume of the prism.

Information that should be in groups’ presentations:

Group 1

Right prism – built, properties, kinds.

- the right prismright prismright prism is such polyhedron whose two congruent sides (bases) are located in parallel planes
and the other sides are rectangles.

- if the base of the prism is a regular polygon, then we say that the prism is a right regular prismright regular prismright regular prism.

[Illustration]

Group 2

Line segments in prisms.

[Illustration]

base edges: AB, BC, CD, AD, A’B’, B’C’, C’D’, A’D’
face edges: AA’, BB’, CC’, DD’
diagonals of bases: AC, BD, A’C’, B’D’
diagonals of faces AB’, BA’, BC’, B’C, CD’, C’D, AD’, A’D
diagonal of the solid figure: AC’, BD’, CA’, DB’

Angles in prisms.

[Illustration]

The angle of inclination of the diagonal of the prism to the plane of the base CAC.

Group 3

Cross‑setions of prisms.

[Illustration]

The cross‑section is a polygon obtain as a result of cutting the prism with any plane.

Group 4

The total surface area and the volume of a prismvolume of a prismvolume of a prism

PIndeks dolny c = 2· PIndeks dolny p + PIndeks dolny b, V = PIndeks dolny p· H

where:

PIndeks dolny c – total surface area of the prism

PIndeks dolny p – base surface area of the prism

PIndeks dolny b – lateral face surface area of the prism

V – volume of the prism

H – altitude of the prism

Students work individually, using computers. Their task is to analyse the solution of the exemplary task presented in the applet.

[Geogebra applet]

Students work in two‑persons groups. They do exercises using obtained knowledge.

Task 1

Draw a right regular prismright regular prismright regular prism. Mark the angle between the diagonal of the lateral face and the plane of
the base.

Task 2

Calculate the volume of the cuboid whose diagonal is equal to 9 cm and is inclined to the plane of the base at 30° angle, knowing that one edge of the base is twice longer than the other. Make a proper drawing.m0b529835e6fd5261_1527752256679_0Calculate the volume of the cuboid whose diagonal is equal to 9 cm and is inclined to the plane of the base at 30° angle, knowing that one edge of the base is twice longer than the other. Make a proper drawing.

Task 3

Draw a cuboid and mark a cross‑section done by the plane that goes through diagonals of bases. Calculate the area of this cross‑section, knowing that dimensions of the cuboid are equal to: 5 cm, 6 cm, 7 cm.

The teacher evaluates the students’ work and clarifies doubts.

An extra task:

Calculate the volume of the cube in which after increasing the length of its edges by 1 cm, the total surface area increased by 66 cmIndeks górny 2.

Lesson summarym0b529835e6fd5261_1528450119332_0Lesson summary

Students do the revision exercises. Then together they sum‑up the classes, by formulating the conclusions to memorise.

- the right prism is such polyhedron whose two congruent sides (bases) are located in parallel planes
and the other sides are rectangles,
- if the base of the prism is a regular polygon, then we say that the prism is a right regular prism,
- the cross‑section is a polygon obtain as a result of cutting the prism with any plane,
- PIndeks dolny c = 2· PIndeks dolny p + PIndeks dolny b, V = PIndeks dolny p· H.
m0b529835e6fd5261_1527752263647_0- the right prism is such polyhedron whose two congruent sides (bases) are located in parallel planes
and the other sides are rectangles,
- if the base of the prism is a regular polygon, then we say that the prism is a right regular prism,
- the cross‑section is a polygon obtain as a result of cutting the prism with any plane,
- PIndeks dolny c = 2· PIndeks dolny p + PIndeks dolny b, V = PIndeks dolny p· H.

Selected words and expressions used in the lesson plan

angles in the prismangles in the prismangles in the prism

cross‑section of a prismcross‑section of a prismcross‑section of a prism

length of the diagonal of a cubelength of the diagonal of a cubelength of the diagonal of a cube

line segments in the prismline segments in the prismline segments in the prism

right prismright prismright prism

right regular prismright regular prismright regular prism

right triangular prismright triangular prismright triangular prism

side edgesside edgesside edges

total surface area of a prismtotal surface area of a prismtotal surface area of a prism

volume of a prismvolume of a prismvolume of a prism

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right prism1
right prism

graniastosłup prosty

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wymowa w języku angielskim: right prism
right regular prism1
right regular prism

graniastosłup prawidłowy

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wymowa w języku angielskim: right regular prism
volume of a prism1
volume of a prism

objętość graniastosłupa

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wymowa w języku angielskim: volume of a prism
angles in the prism1
angles in the prism

kąty w graniastosłupie

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wymowa w języku angielskim: angles in the prism
cross‑section of a prism1
cross‑section of a prism

przekrój prostopadłościanu

R1TYSWNxAFjGN1
wymowa w języku angielskim: cross‑section of a prism
length of the diagonal of a cube1
length of the diagonal of a cube

długość przekątnej sześcianu

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wymowa w języku angielskim: length of the diagonal of a cube
line segments in the prism1
line segments in the prism

odcinki w graniastosłupie

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wymowa w języku angielskim: line segments in the prism
right triangular prism1
right triangular prism

graniastosłup prawidłowy trójkątny

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wymowa w języku angielskim: right triangular prism
side edges1
side edges

krawędzie boczne

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wymowa w języku angielskim: side edges
total surface area of a prism1
total surface area of a prism

pole powierzchni całkowitej graniastosłupa

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wymowa w języku angielskim: total surface area of a prism