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The
second-grade standards extend the
study of number and spatial sense
to include three-digit numbers and
three-dimensional figures. Students
will continue to learn, use, and gain
proficiency in the basic addition
facts through the nines table and
the corresponding subtraction facts.
Students will begin to use standard
U.S. Customary and metric units of
measurement; predict, using simple
probability; and create and interpret
picture and bar graphs. Students will
work with a variety of patterns and
will develop knowledge of equality
by identifying missing numbers in
addition and subtraction facts.
While learning mathematics, students will be actively
engaged, using concrete materials and appropriate
technologies such as calculators and computers.
However, facility in the use of technology shall
not be regarded as a substitute for a student's
understanding of quantitative concepts and relationships
or for proficiency in basic computations.
Mathematics has its own language, and the acquisition
of specialized vocabulary and language patterns
is crucial to a student's understanding and appreciation
of the subject. Students should be encouraged
to use correctly the concepts, skills, symbols,
and vocabulary identified in the following set
of standards.
Problem solving has been integrated throughout
the six content strands. The development of problem-solving
skills should be a major goal of the mathematics
program at every grade level. Instruction in the
process of problem solving will need to be integrated
early and continuously into each student's mathematics
education. Students must be helped to develop
a wide range of skills and strategies for solving
a variety of problem types. |
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Number
and Number Sense
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| 2.1 |
The
student will
- read, write,
and identify the place
value of each digit
in a three-digit numeral,
using numeration models;
and
- round two-digit
numbers to the nearest ten.
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| 2.2 |
The
student will compare two whole
numbers between 0 and 999,
using symbols (>, <, or
=) and words (greater than,
less than, or equal to). |
| 2.3 |
The
student will identify the ordinal
positions first through twentieth,
using an ordered set of objects. |
| 2.4 |
The
student will identify the part
of a set and/or region that represents fractions for
one-half, one-third, one-fourth,
one-eighth, and one-tenth and
write the corresponding fraction. |
| 2.5 |
The
student will
- count forward
by twos, fives, and tens
to 100, starting at various
multiples of 2, 5, or 10,
using mental mathematics,
paper and pencil, hundred
chart, calculators, and/or
concrete objects, as appropriate;
- count backward
by tens from 100;
- group objects
by threes and fours; and
- recognize even
and odd numbers, using
objects.
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Computation
and Estimation
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| 2.6 |
The
student will recall basic addition
facts - i.e., sums to 18 or
less - and the corresponding subtraction
facts. |
| 2.7 |
The
student, given two whole numbers
whose sum is 99 or less, will
- estimate
the sum; and
- find the sum, using various
methods of calculation (mental
computation, concrete materials,
and paper and pencil).
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| 2.8 |
The
student, given two whole numbers,
each of which is 99 or less, will
- estimate the difference;
and
- find the difference, using
various methods of calculation
(mental computation, concrete
materials, and paper and
pencil).
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| 2.9 |
The
student will create and solve
one-step addition and
subtraction problems using data
from simple tables, picture graphs,
bar graphs, and practical situations. |
| 2.10 |
The
student, given a simple addition
or subtraction fact, will recognize
and describe the related facts
which represent and describe the
inverse relationship between addition
and subtraction (e.g., 3 + __
= 7, ___ + 3 = 7; 7 – 3
= __, and 7 – __ = 3). |
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| 2.11 |
The
student will
- count and
compare a collection of
pennies, nickels, dimes,
and quarters whose total
value is $2.00 or less;
and
- identify
the correct usage of the
cent symbol (¢), dollar
symbol ($), and decimal
point (.).
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| 2.12 |
The
student will estimate and then
use a ruler to make linear measurements
to the nearest centimeter and
inch, including measuring the
distance around a polygon in
order to determine perimeter. |
| 2.13 |
The
student, given grid paper, will
estimate and then count the number
of square units needed to cover
a given surface in order to determine area. |
| 2.14 |
The
student will estimate and then
count the number of cubes in a
rectangular box in order to determine
volume. |
| 2.15 |
The
student will estimate and then
determine weight/mass of
familiar objects in pounds and/or
kilograms, using a scale. |
| 2.16 |
The
student will tell and write time to
the quarter hour, using analog
and digital clocks. |
| 2.17 |
The
student will use actual measuring
devices to compare metric and
U.S. Customary units (cups, pints,
quarts, gallons, and liters) for measuring
liquid volume, using the concepts
of more, less, and equivalent. |
| 2.18 |
The
student will
- use calendar
language appropriately
(e.g., months, today,
yesterday, next week,
last week);
- determine past
and future days of
the week; and
- identify
specific dates on a given
calendar.
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| 2.19 |
The
student will read the temperature
on a Celsius
and/or Fahrenheit thermometer
to the nearest 10 degrees. |
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| 2.20 |
The
student will identify, describe,
and sort three-dimensional (solid)
concrete figures, including a
cube, rectangular solid (prism),
square pyramid, sphere, cylinder,
and cone, according to the number
and shape of
the solid’s faces, edges,
and corners |
| 2.21 |
The
student will identify and create
figures, symmetric along a line,
using various concrete materials. |
| 2.22 |
The
student will compare and contrast
plane and solid geometric shapes
(circle/sphere, square/cube, and
rectangle/rectangular solid). |
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Probability
and Statistics
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| 2.23 |
The
student will read, construct,
and interpret a simple picture
and bar graph. |
| 2.24 |
The
student will record data from
experiments, using spinners and
colored tiles/cubes, and use the
data to predict which of two events
is more likely to occur if the
experiment is repeated. |
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| 2.25 |
The
student will identify, create,
and extend a wide variety of patterns,
using numbers, concrete
objects,
and pictures. |
| 2.26 |
The
student will solve problems by
completing a numerical sentence
involving the basic facts for
addition and subtraction. Examples
include: 3 + __ = 7, or 9 – __
= 2. Students will create story
problems, using the numerical
sentences. |
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