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Second

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									                                            Second Grade Science Standards
Content Standard:                            Performance Expectations:                   Enabling Knowledge:                     Sample Tasks:


2-3 PS1A Motion can be described as a        Give an example to illustrate motion as     Students will understand that when
change in position over a period of time.    a change in position over a period of       something moves from one location
                                             time (e.g., if a student stands near the    to another, it is in motion.
                                             door and then moves to his/her seat, the
                                             student is “in motion” during that time).   Students will understand that
                                                                                         motion involves something moving
(Enduring Understanding: Forces on                                                       from one position to another over a
objects make them move. Changes in                                                       period of time.
forces will cause changes in the
motion.)




2-3 PS1B There is always a force             Identify the force that starts something    Students will understand that an
involved when something starts moving        moving or changes its speed or              objects motion is created by a force
or changes its speed or direction of         direction of motion (e.g., when a ball is   upon that object.
motion.                                      thrown or when a rock is dropped).
                                                                                         Students will understand that the
                                                                                         greater the force the more intense
                                                                                         the objects change of motion.
(Enduring Understanding: Forces on                                                       Students will understand that a force
objects make them move. Changes in                                                       can also change an objects speed
forces will cause changes in the                                                         and direction.
motion.)
2-3 PS1C A greater force can make an      Give examples to illustrate that a           Students will understand that when
object move faster and farther.           greater force can make an object move        a large or greater force is applied to
                                          faster than a lesser force (e.g., throwing   an object it will move faster and
                                          a ball harder or hitting it harder with a    also move a greater distance. (Great
                                          bat will make the ball go faster).           place to allow students to do an
                                                                                       inquiry activity to investigate this.)

(Enduring Understanding: Forces on
objects make them move. Changes in
forces will cause changes in the
motion.)




2-3 PS1D The relative strength of two     Measure and compare the distances            Students will understand that when
forces can be compared by observing the   moved by an object (e.g., a toy car)         a large or greater force is applied to
difference in how they move a common      when given a small push and when             an object it will move faster and
object.                                   given a big push.                            also move a greater distance. (Great
                                                                                       place to allow students to do an
                                                                                       inquiry activity to investigate this.)




(Enduring Understanding: Forces on
objects make them move. Changes in
forces will cause changes in the
motion.)
2-3 PS2A Objects have properties,           List several properties of an object.        Students will understand that all
including size, weight, hardness, color,    Select one of several objects that best      objects have special things that
shape, texture, and magnetism.              matches a list of properties.                make them different than other
Unknown substances can sometimes be         Sort objects by their functions, shapes,     objects, these things are called
identified by their properties.             and the materials they are composed of.      properties.

                                                                                         Students will understand that many
                                                                                         different things, like size, weight,
                                                                                         color, shape, hardness, texture, and
(Enduring Understanding: The                                                             magnetism, can make up an objects
properties of an object depend on its                                                    properties.
shape and on the material it is made
from.)                                                                                   Students will understand that
                                                                                         objects can be sorted into groups by
                                                                                         using their properties.




2-3 PS2B An object may be made from         List properties of common materials.         Students will understand that one
different materials. These materials give   Compare similar objects made of              object can be made out of different
the object certain properties.              different materials (e.g., a plastic spoon   materials: a spoon can be made of
                                            and a metal spoon) and explain how           plastic, wood, glass, steel, and
                                            their properties are similar and             aluminum.
                                            different.
                                            Compare two objects made of the same         Students will understand that each
                                            material but a different shape (e.g., a      of the materials a spoon can be
(Enduring Understanding: The                plastic fork and a plastic spoon) and        made of have different properties
properties of an object depend on its       identify which of their properties are       even though they are all in the shape
shape and on the material it is made        similar and different.                       of a spoon.
from.)
2-3 PS2C Water changes state (solid,       Predict what will happen to a sample of        Students will understand that water
liquid, gas) when the temperature of the   liquid water if it is put into a freezer (it   has very special properties.
water changes.                             will turn to ice) and if it is put into a
                                           pan and heated on the stove (it will turn      Students will understand that by
                                           to steam or water vapor).                      lowering the temperature of water it
                                                                                          will freeze into a solid called ice.

                                                                                          Students will understand that by
(Enduring Understanding: The                                                              raising the temperature of water it
properties of an object depend on its                                                     can turn into steam or water vapor.
shape and on the material it is made
from.)                                                                                    Students will understand that these
                                                                                          changes in water from a liquid to a
                                                                                          solid and liquid to a gas are called
                                                                                          changes of state.




2-3 PS2D The amount of water and other     Predict what will happen to a small            Students will understand that when
liquids left in an open container will     quantity of water left in an open              a liquid is left in an open container
decrease over time, but the amount of      container overnight.                           (exposed to the air) it will slowly
liquid in a closed container will not      Predict what will happen to the same           disappear through a process called
change.                                    quantity of water left in a closed             evaporation.
                                           container overnight.
                                           Explain where the liquid water goes            Students will understand that if that
                                           when the amount decreases over time.           container is closed with a sealed lid,
                                                                                          this will not happen.

(Enduring Understanding: The
properties of an object depend on its
shape and on the material it is made
from.)
2-3 ES2A Water plays an essential role        Identify where natural water bodies         Students will understand that water
in Earth systems, including shaping           occur in the students’ local                is an important part of all Earth
landforms.                                    environment.                                systems, living and non-living.
                                              Show how water has shaped a local
                                              landform (e.g., river valley, canyon,       Students will understand that we
                                              Puget Sound).                               have the Columbia River, Snake
                                                                                          River and Yakima River all located
                                                                                          in our immediate area.
(Enduring Understanding: Water is
essential in Earth systems. This is                                                       Students will understand that water
seen by observing and recording                                                           can shape the land and a good
changes in weather patterns and                                                           example is Palouse Falls.
Earth formations.)




2-3 ES2B Water can be a liquid or solid       Describe the various forms and places       Students will understand that water
and can go back and forth from one form       that water can be found on Earth as         is special because it can be found in
to another. If water is turned into ice and   liquids and solids (e.g., as liquid in      three different states: liquid, solid,
then the ice is allowed to melt, the          morning dew; in lakes, streams, and         and gas (water vapor).
amount of water will be the same as it        oceans; as solid ice at the North
was before freezing. Water occurs in the      and South Poles, and on the tops of         Students will understand that rain,
air as water vapor, rain, snow, hail, fog,    mountains; and in the air as clouds,        snow, hail, fog and clouds all help
and clouds.                                   fog, rain, hail, and snow).                 us to keep track of seasonal changes
                                              Predict that the weight of a sample of      in weather.
                                              water will be nearly the same before
                                              and after it is frozen or melted. Explain   Students will understand that when
                                              why the weight will be almost the           100 grams of water is frozen solid
(Enduring Understanding: Water is             same.                                       then allowed to unfreeze, it will still
essential in Earth systems. This is                                                       be 100 grams.
seen by observing and recording
changes in weather patterns and
Earth formations.)
2-3 ES2C Weather changes from day to        Measure and record changes in weather        Students will understand that
day and over the seasons. Weather can       (e.g., inches of rain using a rain gauge,    weather includes all things that can
be described by measurable quantities,      depth of snow using a ruler, and             be measured outside day to day.
such as temperature and precipitation.      temperature using a thermometer).
                                            Interpret graphs of weather conditions       Students will understand that things
                                            to describe with measurements how            that can be measured include
                                            weather changes from season to season.       temperature, rain fall (precipitation),
(Enduring Understanding: Water is                                                        wind speed, clouds, and others.
essential in Earth systems. This is
seen by observing and recording                                                          Students will understand that we
changes in weather patterns and                                                          can see how much weather changes
Earth formations.)                                                                       from season to season by keeping
                                                                                         records in the form of graphs.




2-3 LS1A Plants have life cycles that       Describe the life cycle of a common          Students will understand that plants
include sprouting, growing to full size,    type of plant (e.g., the growth of a fast-   start their lives as seeds and end
forming fruits and flowers, shedding        growing plant from seed to sprout, to        when they die, this is called a life
seeds (which begins a new cycle), and       adult, to fruits, flowers, and seeds).       cycle.
eventually dying. The details of the life
cycle are different for different plants.                                                Students will understand that a plant
                                                                                         life cycle not only includes starting
                                                                                         as a seed and dying as a mature
                                                                                         plant, but includes sprouting,
                                                                                         growing leaves and stems, creating
(Enduring Understanding: Plants and                                                      flowers, from them fruit and seed.
animals have life cycles.)
                                                                                         Students will understand that life
                                                                                         cycles are different for different
                                                                                         plants ( a Marigold compared with
                                                                                         an Oak Tree)
2-3 LS1B Animals have life cycles that     Describe the life cycle of a common        Students will understand that
include being born; developing into        type of animal (e.g., the development      animals start their lives being born
juveniles, adolescents, then adults;       of a butterfly or moth from egg to larva   and end their lives by dying, this
reproducing (which begins a new cycle);    to pupa to adult, or the development of    process is called a life cycle.
and eventually dying. The details of the   a frog from egg to tadpole to adult
life cycle are different for different     frog).                                     Students will understand that not
animals.                                                                              only is an animal born, then
                                                                                      eventually dies, it goes through
                                                                                      stages in its life that distinguish its
                                                                                      development.
(Enduring Understanding: Plants and                                                   Students will understand that with
animals have life cycles.)                                                            humans it begins as baby, then
                                                                                      toddler, then child, then teenager,
                                                                                      then young adult, middle aged adult,
                                                                                      and senior adult. All animals have
                                                                                      life cycles with certain phases of
                                                                                      development.

								
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