Math 211 Homework Spring 2014
January 14 – Discussed undefined terms and how to name a point, a plane or a line. Defined collinear and noncollinear
points. Discussed the van Hiele levels and what characteristics a child might display if they are on that particular level.
Homework: Read section 11-1, know the two definitions(be able to write a complete sentence that defines the word),
know the van Hiele levels (1-5, then what is expected of a child at that level), and write problem 1 under Assessment 111. Journal prompt: I liked(or disliked) high school geometry because. . . [Write at least one good paragraph to defend
the choice that you make.]
January 16 – Quiz on homework. Discussed lots of vocabulary with examples drawn on the board or illustrated with
objects in the classroom. Homework: Define – “between”, segment (half-open, open, half-closed, etc.), ray, half-line,
coplanar points, noncoplanar points, coplanar lines. Section 11-1 – 3a, c, and f; 10; and 12. Journal prompt: Write at
least six sentences to describe where you “see” objects that could illustrate the words you are to define. For example:
The edge of the door in my office is a line segment. Do not write all sentences about one word of vocabulary.
January 21 – Quiz on homework. Returned last weeks quiz and gathered data/info about students. Discussed
vocabulary/ideas in Table 11-3, 11-4, and angle in Table 11-5. Homework: Please READ the rest of Section 11-1 and
begin 11-2. READ THE SYLLABUS (be prepared to answer questions about details other than topics and objectives).
Define: intersecting lines, concurrent lines, intersecting planes, parallel lines, parallel planes, skew lines, and angle.
Section 11-1 A - Assessment - #2, 3b, d, e, and #11. Page 650 NAEP question. Journal prompt: page 650 #8.
January 23 – Discussed/defined interior of an angle; adjacent angles, acute, obtuse, right and straight angles;
supplementary angles; and complementary angles. Homework: Section 11-1 – 4, 6, 7 (be careful on b part), 8. Journal:
Describe with at least 5 sentences where you see angles and what kind of angle you see (be specific). Ex: If it is 3:07 p.m.
then the hands of my watch form an acute angle.
January 28 – Snow day!
January 30 – Distributed folders. Discussed measuring angles and segments to the nearest ?? inch (half, fourth, etc.).
Discussed measuring angles. Defined dihedral angle, perpendicular lines, circle, radius, chord, and diameter.
Homework: Section 11-1 – 9. Section 11-2 – READ the section. Memorize the relationships in Table 11-6 . Assessment
11-2A (page 660) #1, 2, 3, 5; 11-2B – 1. TIMSS questions. Journal: none due next Tuesday (read the section).
February 4 – Discussed vocabulary associated with a circle, the Metric system prefixes, and names of angles associated
with two lines intersected by a third line in two different points. Homework: KNOW the prefixes from the Metric
System using Meter as the unit of measure. Define: arc (major, minor, semicircle), concentric circles, central circle,
segment of a circle. Students should identify alternate interior angles, alternate exterior angles, and corresponding
angles in a diagram. Problems from 11-1 A – 15 and section 11-2 – 8, 9, 14, 21 . Journal: Tell me something that you
learned today that you did not already know.
February 6 – Quiz on homework. Discussed simple, closed curves, perimeter (circumference) names for polygons, and
names for triangles. Homework: Section 11-2 – 10, 12, 13,18, 19, 20; Section 11-3 – 1, 2, 4, 6, 7a, b, 9. Journal: Write
six sentences that tell me where you found six different kinds of triangles(ex: I have a “star” shaped solid hanging from
the ceiling in my office that has acute isosceles triangles on the sides.)
February 11 – Discussed line and turn symmetry. Discussed/defined special quadrilaterals. Homework: Define the
special quadrilaterals and be prepared to give triangles their best name. Section 11-3 – 5, 8,10, 12, 13; Section 11-3 B –
4, 8, 11, 12. Journal: Identify at least two logos/trademarks that have symmetry and indicate what kinds of symmetry
(sketch would be nice). Then identify three other places you saw line or rotational symmetry. Test date is February 20
on Chapter 11.
February 13 – Quiz on definitions. Discussed Section 11-4. Homework: Define – supplementary angles &
complementary angles. Identify vertical angles. Section 11-4 Assessments A – 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, and 15.
(If you get stuck go to the next problem, then come back and try the original problem again.)
February 18 – Returned folders. Answered questions about homework. Discussed test content/form. Demonstrated
first two constructions from Chapter 12. Homework: Test on Thursday on Chapter 11. Due next Tuesday – construction
worksheet outside my office door. Journal: What did you learn that was new in this chapter?
February 20 – Test on Chapter 11.
February 25 – Returned tests and article summaries in the folder. Collected the construction homework, then returned
it and told them to do it again! Discussed congruent triangle, correspondences, and constructing a triangle given three
different length sides. Discussed SSS congruence. And used it to prove that the longer diagonal of a kite divides the kite
into two congruent triangles – creating some congruent angles. Homework: Redo last homework. Another handout on
construction. Section 12-1 - #3 and Math Connections 12 -1 #7. Journal: Explain to me what you change to make the
next test grade higher than the first one.
February 27 – Took up the “redo” homework. Discussed two constructions: copy and angle(page 710) and
perpendicular bisector of a segment (page 737). Discussed three more ways to verify that two triangles are congruent:
SAS(construction page 711), HL, and LL. Handed out the second project and offered hints. Homework: Two handout
sheets on constructions. Journal: page 719 - #8 Explain carefully why you say yes or no.
March 4 – Constructed circumcenter and circumscribed circle. Constructed centroid. Discussed ASA and SSA. Discussed
properties from “green” boxes in Section 12.1 and 12.2. Homework: Two worksheets – one during class, one outside
my door. Section 12-1 - #9, 10, 11, and 13. Section 12-1B – 3. Page 723 – TIMSS and NAEP problems. Section 12-2 #3,
back in Section 11- 3 - # 2. There is geoboard dot paper outside my office if you want a sheet. Journal – Section 12 – 1B
#7. Define: median and centroid.
March 6 – Brought the handout that was not picked up. Constructed the angle bisectors and the incenter of a triangle.
Used congruent triangles to discuss why diagonals bisect angles of a rhombus. Began a discussion of properties on page
727. Constructed the perpendicular to a line from a point on it (page737 last figure) Homework: Handout sheet about
congruent triangles. Defined “incenter”. Practice constructions.
March 18 – Constructed the perpendicular to a line from a point not on it page 736. Completed the discussion about
properties of quadrilaterals on page 727. . . emphasizing the definitions and using congruent triangles to prove the
properties/theorems. Homework: Section 12-2 – 5, 7, 8, 9, 10, 13, 17. Section 12-2B – 5, 7. Review: #18. Journal:
Identify at least 5 special quadrilaterals(not all rectangles) that you see around campus/dorm rooms/ etc. – tell me
which property is obvious about each quadrilateral that you see. Earliest test date for Chapter 12 is March 27th.
March 20 – Students completed a “scavenger” hunt and projects were turned in. Discussion included similar triangles
and proportions. Geometric mean was defined. Homework: Section 12-4A – 4 i, ii, and iv. only, 5b; 12-4B – 4a, b, and
d only, 5b and c. TIMSS problems and NAEP problem. Test will be April 1 on Chapter 12. Journal – If I were a polygon, I
would be a __________ because. 
March 25 – Reviewed similar triangles and proportions. Quiz. Constructed a line parallel to a given line through a point
not on the line. Discussed other proportions. Homework: Practice the parallel line construction. Section 12-4 – 4iii, 5a.
Section 12-4 B – 4 c, 5a and d. KNOW – linear units of measure from Chapter 11. KNOW Table 14-2 page 831 – first
two rows of the table . READ page 830 – 832 about converting units of Area and Land Measure. Know what an acre is.
Journal: Explain at least 5 places where you need to think about/know area of something. (ex: To buy enough paint for
a room, I need to know the area of the walls and how much area a gallon of paint will cover.)
March 27 – Returned quiz. Answered questions about homework/proportions. Discussed changing square units in the
English system, what an acre is and what a square mile =. Homework for April 3 – READ section 14-1 – KNOW the units
in Table 14-1, 14-2 and 14-3. Know area formulas for special quadrilaterals. Section 14-1 problems 5,7, 8, 9, 12, and
13. Journal: As you study for the test tell me about something that you learned in chapter 12 that you did not
remember from high school geometry.
April 1 – TEST
April 3 – Discussed: land area units; tangrams and area; area/perimeter formulas for circle, sector, and regular polygon
were developed and discussed. Homework: Section 14-1 – 14 – 20. KNOW THE NEW FORMULAS!!! Journal: React to
one of the articles that I gave out on one page. (it’s outside my office if you were not here.)
April 8 – Discussed square units, special triangles and polyhedra. Homework: Section 14-1 2, 4, 5; Section 14-2 #2, 12 –
14; Section 14-3 – 1, 2, 3, 5, 7, 9, 10. Journal: Write a sentence to describe at least 5 polyhedra shapes that you find.
April 10 – Justin Eaves taught discussing Surface Area. Homework: Handout on area. Section 14-2 – 1, 6, 10 and 11;
Section 14-4A – 1, 2, 4, 6, 10, 12 and review problems 12, 13, 14, 15, NAEP – no journal.
April 15 – collected the handout from last time. Discussed volume, different volume measures and cubic units.
Homework: Memorize formulas for surface area and volume. Section 14-5 – 1, 2, 3, 4, 5, 6, 9, 21. READ and convert
units on pages 892 and 893. Journal: Read and record volume (all units) from at least 6 containers. Indicate which unit
is Metric and which is customary or English. Record volume only, not mass.
April 17 – Discussion included liquid volume with demonstration and mass. Handout about the English system of
measurement from an old textbook. Homework: Read page 907 and 908 about temperature. Read about the
connection between liquid volume, mass and volume in the Metric system on page 891-893. Section 14-5 – Memorize
the units of liquid volume and weight in the English system. Know the unit to measure liquid volume and weight(mass)
in the Metric system and which prefixes are most commonly used. Research what a league (the unit of measure )
Section 14-5A – 11, 22-27. Test on Chapter 14 is next Thursday 24th.