Unit Two-Estimation and Computation
Content Objectives and
Language Objectives
Lesson 2.1
 Content Objective: Students will devise an estimation
strategy to solve a problem for which finding an exact
answer is impossible.
 Language Objective: Students will discuss in partners
how to make the best estimate and then defend it.
Lesson 2.2
 Content Objectives: Students will review place-value
concepts for whole numbers and decimals, and will
add using the partial-sums and column-addition
methods.
 Language Objectives: Students will read about place
values (p.29) and partial-sums & column-addition (p.
13)in the SRB, and students will write examples of the
partial-sums and column-addition methods in their
math journals.
Lesson 2.3
 Content Objective: Students will subtract multi-digit
whole numbers and decimals by using the trade-first
and partial-differences methods.
 Language Objectives: Students will read how to
subtract using the trade-first (p. 15) and partial
differences (p. 17) methods in the SRB as well as how to
play the Top-It Game (p. 294).
Lesson 2.4
 Content Objective: Students will review a guide for
solving number stories and concepts about number
sentences.
 Language Objective: Students will use and write open
sentences as aids in solving number stories.
 Vocabulary: variable
 Symbols (See next slide)
3+5=?
Symbols
 Relation Symbols:
< means less than
> means is greater than
=means is equal to
 Operation Symbols:
+ means plus
- means minus
x or * means times
÷ or / means divided by
Lesson 2.5
 Content Objective: Students will review statistical
landmarks for sets of data and estimate reaction times.
 Language Objectives: Students will speak the Stand
out Math chants for vocabulary, read about the “mean”
in the SRB (p. 115), and use statistical landmarks to
write and describe experimental data.
 Vocabulary: mean (or average), minimum, maximum,
range, mode, median
Lesson 2.6
 Content Objective: Students will be introduced to the
probability meter and estimate the probability of an
event.
 Language Objectives: Students will listen, review, and
apply vocabulary associated with chance events, and
will review the Stand Out Math chant for “probability”.
Lesson 2.7
 Content Objective: Students will make magnitude
estimates for products of multi-digit numbers
including decimals.
 Language Objectives: Students will discuss in teams
how to make magnitude estimate using multiplication
and will read how to play multiplication Bull’s-eye in
the SRB (p. 284).
Lesson 2.8
 Content Objectives: Students will use the partial-
products method to multiply multi-digit whole
numbers and will be introduced to products of
decimals.
 Language Objective: Students will read about the
partial-products method (p. 19) and the multiplication
of decimals (p. 38) in the SRB.
Lesson 2.9
 Content Objective: Students will review and practice
the lattice method for multiplication of whole
numbers and decimals.
 Language Objectives: Students will discuss, listen,
read, and write about the lattice method of
multiplication in teams.
Lesson 2.10
 Content Objectives: Students will begin to
understand the relative sizes of 1 million, 1 billion, and
1 trillion; and make an informed estimate from a
sample of experimental data.
 Language Objective: Students will discuss the
differences between a guess and an estimate, discuss
what a “sample” is, and read about place values for
whole numbers (p. 4 of SRB).
Lesson 2.11
 Content Objectives: Students will review and be
assessed on the material covered in Unit 2.
 Language Objective: Students will write answers to
review questions on dry erase boards as the class
reviews.