Effective elementary numeracy teachers
understand, explain, and model knowledge and understanding of major numeracy
concepts, algorithms, procedures, connections, and applications in varied
contexts, within and among mathematical domains.
a.
Numerical Practices.
Numerical Practices consist of concepts within number and operations base ten,
and operations and algebraic thinking. Upon program completion candidates shall
be able to do the following:
i.
Foundations of Counting. Understand, explain, and model the
intricacy of counting, including the distinction between counting as a list of
numbers in order and counting to determine a number of objects. (ACOS
K.1, K.2, K.3, K.4, K.5, 1.10)
ii.
Operations with Numbers: Base
Ten.
a.
Understand, explain, and
model how the base-ten place value system relies on repeated bundling in
groups of 10 and how to use varied representations including objects, drawings,
layered place value cards, and numerical expressions to help reveal the
base-ten structure. (ACOS K.14, 1.11, 1.12,2.6, 2.7, 2.8, 2.9, 4.6,
4.7, 4.8, 4.9, 5.3, 5.4, 5.5)
b.
Understand, explain, and
model how efficient base-ten computation methods for addition,
subtraction, multiplication, and division rely on decomposing numbers
represented in base ten according to the base-ten units represented by their
digits and applying (often informally) properties of operations, including the
commutative and associative properties of addition and multiplication and the
distributive property, to decompose a calculation into parts. (ACOS
K.10, K.11, K.12, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.13, 1.14, 1.15,
2.1, 2.2, 2.10, 2.11, 2.12, 2.13,2.14, 3.10, 3.11, 3.12, 4.10, 4.11, 4.12, 5.6,
5.7, 5.8)
c.
Understand, explain, and model how to use drawings or manipulative
materials to reveal, discuss, and explain the rationale behind computation
methods. (ACOS K.13, K.15, 1.13, 2.1, 2.2, 2.3, 2.4, 2.10, 2.11, 2.12,
2.13, 2.14, 2,21, 2,22, 24c, 3.1, 3.2, 3.3, 3.5, 3.6, 3.8, 3.9, 3.11, 3.12,
4.2, 4.3b, 4.10, 4.11, 4.12, 5.7)
d.
Understand, explain, and
model how to extend the base-ten system to decimals and use number lines
to represent decimals. Explain the rationale for decimal computation methods.
(ACOS 5.3, 5.4a, 5.5, 5.8)
iii.
Operations and Algebraic
Thinking.
a.
Understand, explain,
and model the different types of problems solved by addition,
subtraction, multiplication, and division, and meanings of the operations
illustrated by these problem types. (ACOS K.9, 1.1, 1.2, 2.1, 3.3, 3.8,
4.1, 4.2, 4.3, 5.1)
b.
Understand, explain, and model teaching/learning paths for
single-digit addition and associated subtraction and single-digit
multiplication and associated division, including the use of properties of
operations. (ACOS K.8, K.12, 1.3, 1.4, 1.5, 1.6, 2.2, 3.1, 3.2, 3.5,
3.6, 3.7)
c.
Understand, explain, and model foundations of algebra within
elementary mathematics, including understanding the equal sign as meaning "the
same amount as" rather than a "calculate the answer" symbol. (ACOS 1.7,
3.4)
d.
Understand,
explain, and model numerical and algebraic expressions by describing
them in words, parsing them into their component parts, and interpreting the
components in terms of a context. (ACOS K.10, K.11, 1.8, 2.3, 2.4, 3.8,
4.3, 5.1)
e.
Understand, explain, and model lines of reasoning used to solve
equations and systems of equations. (ACOS K.13, 1.9, 2.5, 3.9, 4.4,
4.5, 5.2)
iv.
Operations with Numbers: Fractions.
a.
Understand, explain, and
model fractions as numbers, which can be represented by area and set
models and by lengths on a number line. Define a/b fractions as a part, each of
size 1/b. Attend closely to the whole (referent unit) while solving problems
and explaining solutions. (ACOS 1.23, 2.27, 3.13,
3.14)
b.
Understand,
explain, and model addition, subtraction, multiplication, and division
problem types and associated meanings for the operations extend from whole
numbers to fractions. (ACOS 4.15, 4.16, 5.11, 5.14, 5.15)
c.
Understand, explain, and
model the rationale for defining and representing equivalent fractions
and procedures for adding, subtracting, multiplying, and dividing fractions.
(ACOS 3.15, 4.13, 4.14, 4,17, 4,18, 4.19, 5.9, 5.10,
5.12)
d.
Understand,
explain, and model the connection between fractions and division, a/b =
a÷b, and how fractions, ratios, and rates are connected via unit rates.
(ACOS 5.11)
e.
Understand, explain, and model how quantities vary together in a
proportional relationship, using tables, double number lines, and tape diagrams
as supports. (ACOS 6.1, 6.2, 6.3)
f.
Understand, explain, and
model proportional relationships from other relationships, such as
additive relationships and inversely proportional relationships. (ACOS
5.13, 7.2)
g.
Understand, explain, and model unit rates to solve problems and to
formulate equations for proportional relationships. (ACOS 5.13, 7.1,
7.2)
v.
Measurement, Data Analysis and Geometry.
Measurement is the process of finding a number that shows the
amount of something. It is a system to measure the height, weight, capacity, or
even number of certain objects. It is the process of quantifying something and
then possibly making comparisons between two or more objects or concepts.
Typically, measurements involve two parts-a numeric value and the specific
unit. Data analysis is the ability to formulate questions that can be addressed
with data and collect, organize, and display relevant data to answer them.
Geometry is the study of different types of shapes, figures, and sizes in real
life. Upon program completion, candidates shall be able to do the
following:
a.
Measurement.
1.
Understand,
explain, and model the general principles of measurement, the process of
iterations, and the central role of units: that measurement requires a choice
of measurable attribute, that measurement is comparison with a unit and how the
size of a unit affects measurements, and the iteration, additivity, and
invariance used in determining measurements. (ACOS K.16, K.17, 1.17,
1.18, 1.19, 1.20, 2.17, 2.18, 2.19, 2.20, 2.23, 2.24, 4.21,
5.17)
2.
Understand,
explain, and model how the number line connects measurement with number
through length. (ACOS 2.21, 2.22, 4.22)
3.
Understand, explain, and
model what area and volume are and give rationales for area and volume
formulas that can be obtained by finitely many compositions and decompositions
of unit squares or unit cubes, including formulas for the areas of rectangles,
triangles, and parallelograms, and volumes of rectangular prisms. (ACOS
3.18, 3.19, 3.20, 3.21, 3.22, 3.23, 3.24, 3.25, 4.23, 5.18, 5.19, 6.26, 6.27,
6.28)
b.
Data Analysis (Statistics and Probability).
1.
Understand, explain, and
model appropriate graphs and numerical summaries to describe the
distribution of categorical and numerical data. (ACOS K.15, 1.16, 2.15,
3.16, 3.17, 5.16)
2.
Understand, explain, and model that responses to statistical
questions should consider variability. (ACOS 2.16, 4.20, 5.16,
6.22)
3.
Understand,
explain, and model distributions for quantitative data are compared with
respect to similarities and differences in center, variability (spread), and
shape. (ACOS 6.22, 6.23, 6.24)
4.
Understand, explain, and
model theoretical and experimental probabilities of simple and compound
events, and why their values may differ for a given event in a particular
experimental situation. (ACOS 7.15)
5.
Understand, explain, and
model how the scope of inference to a population is based on the method
used to select the sample. (ACOS 7.10,
7.26)
c.
Geometry.
1.
Understand,
explain, and model geometric concepts of angle, parallel, and
perpendicular, and use them in describing and defining shapes; describing and
reasoning about spatial locations (including the coordinate plane).
(ACOS K.18, K.19, K.20, 4.24, 4.25, 4.26, 4.27, 4.28, 4.29, 5.20,
6.25)
2.
Understand,
explain, and model how shapes are classified into categories, and
reasoning to explain the relationships among the categories. (ACOS
K.21, K.22, K.23, 1.21, 1.22, 2.25, 2.26, 3.26, 5.21, 5.22,
5.23)
3.
Understand,
explain, and model proportional relationships in scaling shapes up and
down. (ACOS 7.17)