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Transcript
Curriculum Expectations Related to Patterning and Algebra
Grade 4
Grade 5
Grade 6
Overall Expectations
Overall Expectations
Overall Expectation
Students will:
Students will:
Students will:
Patterns and Relationships
• describe, extend, and create a
variety of numeric and geometric
patterns, make predictions related to
the patterns, and investigate
repeating patterns involving
reflections
Patterns and Relationships
• determine, through investigation
using a table of values,
relationships in growing and
shrinking patterns, and investigate
repeating patterns involving
translations
Patterns and Relationships
• describe and represent relationships
in growing and shrinking patterns
(where the terms are whole numbers),
and investigate repeating patterns
involving rotations
Expressions and Equality
• demonstrate an understanding of
equality between pairs of
expressions, using addition,
subtraction, and multiplication
Expressions, variables, and
equations
• demonstrate, through investigation,
an understanding of the use of
variables in equations
Expressions, variables, and equations
• use variables in simple algebraic
expressions and equations to
describe relationships
Specific Expectations
Specific Expectations
Specific Expectations
Students will:
Students will:
Students will:
Patterns and Relationships
• extend, describe, and create
repeating, growing, and shrinking
number patterns (e.g., “I created the
pattern 1, 3, 4, 6, 7, 9, …. I started at
1, then added 2, then added 1, then
added 2, then added 1, and I kept
Patterns and Relationships
Patterns and Relationships
• create, identify, and extend numeric • make tables of values for growing
and geometric patterns, using a
patterns given pattern rules in words
variety of tools (e.g., concrete
(e.g., start with 3, then double each
materials, paper and pencil,
term and add 1 to get the next term),
calculators, spreadsheets)
then list the ordered pairs (with the
first coordinate representing the term
• build a model to represent a
Junior Algebra
1
© Queen's Printer for Ontario, 2007
Grade 4
repeating this.”)
• connect each term in a growing or
shrinking pattern with its term
number (e.g., in the sequence 1, 4,
7, 10, …, the first term is 1, the
second term is 4, the third term is 7,
and so on), and record the patterns
in a table of values that shows the
term number and the term
• create a number pattern involving
addition, subtraction, or
multiplication, given a pattern rule
expressed in words (e.g., the pattern
rule “start at 1 and multiply each term
by 2 to get the next term” generates
the sequence 1, 2, 4, 8, 16, 32,
64,…)
• make predictions related to repeating
geometric and numeric patterns
Grade 5
Grade 6
number pattern presented in a table
number and the second coordinate
of values that shows the term
representing the term) and plot the
number and the term
points in the first quadrant, using a
variety of tools (e.g., graph paper,
• make a table of values for a pattern
calculators, dynamic statistical
that is generated by adding or
software)
subtracting a number (i.e., a
constant) to get the next term, or by • determine the term number of a given
multiplying or dividing by a constant
term in a growing pattern that is
to get the next term, given either
represented by a pattern rule in
the sequence (e.g., 12, 17, 22,
words, a table of values, or a graph
27,32,…) or the pattern rule in
• describe pattern rules (in words) that
words (e.g., start with 12 and add 5
generate patterns by adding or
to each term to get the next term)
subtracting a constant, or multiplying
• make predictions related to growing
or dividing by a constant, to get the
and shrinking geometric and
next term (e.g., for 1, 3, 5, 7, 9,…, the
numeric patterns.
pattern rule is “start with 1 and add 2
to each term to get the next term”),
then distinguish such pattern rules
Expressions, variables, and
from pattern rules, given in words,
equations
that describe the general term by
• demonstrate, through investigation,
referring to the term number (e.g., for
an understanding of variables as
Expressions, variables, and
2, 4, 6, 8,…, the pattern rule for the
changing quantities, given
equations
general term is “double the term
equations with letters or other
• determine, through investigation, the
number”)
symbols that describe relationships
inverse relationship between
involving simple rates (e.g., the
• determine a term, given its term
multiplication and division (e.g., since
equations
C
=
3
x
n
and
3
x
n
=
C
number, by extending growing and
4 x 5 = 20, then 20 ÷ 5 = 4; since 35
both represent the relationship
shrinking patterns that are generated
÷ 5 = 7, then 7 x 5 = 35)
between
the
total
cost
(C),
in
by adding or subtracting a constant,
• determine the missing number in
or multiplying or dividing by a
dollars and the number of
equations involving multiplication of
sandwiches
purchased
(n),
when
constant, to get the next term
one- and two-digit numbers, using a
each sandwich costs $3)
Junior Algebra
2
© Queen's Printer for Ontario, 2007
Grade 4
Grade 5
variety of tools and strategies (e.g.,
• demonstrate, through investigation,
modelling with concrete materials,
an understanding of variables as
using guess-and-check with and
unknown quantities represented by
without the aid of a calculator);
a letter or other symbol (e.g., 12 =
• identify, through investigation (e.g.,
5 + □ or 12 = 5 + s can be used to
by using sets of objects in arrays, by
represent the following situation: “I
drawing area models), and use the
have 12 stamps altogether and 5 of
commutative property of
them are from Canada. How many
multiplication to facilitate computation
are from other countries?”)
with whole numbers (e.g., “I know
• determine the missing number in
that 15 x 7 x 2 equals 15 x 2 x 7. This
equations involving addition,
is easier to multiply in my head
subtraction, multiplication, or
because I get 30 x 7 = 210.”)
division and one- or two-digit
numbers, using a variety of tools
and strategies (e.g., modelling with
concrete materials, using guess
and check with and without the aid
of a calculator)
Junior Algebra
3
Grade 6
Expressions, variables, and equations
• demonstrate an understanding of
different ways in which variables are
used (e.g., variable as an unknown
quantity; variable as a changing
quantity)
• identify, through investigation, the
quantities in an equation that vary and
those that remain constant (e.g., in
the formula for the area of a triangle
bxh
•
•
A= 2 , the number 2 is a constant,
whereas b and h can vary and may
change the value of A)
solve problems that use two or three
symbols or letters as variables to
represent different unknown
quantities
determine the solution to a simple
equation with one variable through
investigation using a variety of tools
and strategies (e.g., modelling with
concrete materials, using guess and
check with and without the aid of a
calculator) (Sample problem: Use the
method of your choice to determine
the value of the variable in the
equation 2 x N + 3 = 11. Is there more
than one possible solution? Explain
your reasoning.)
© Queen's Printer for Ontario, 2007