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2015 7th Grade Timeline Ocean County Curriculum
Unit / WeeksIntroduction to Engineering and Design / 2
Forces and Interactions / 8
Energy / 10
History of Earth / 10
Earth Systems / 10
The sequence of units is recommended based on the 2013 Next Generation Science Standards.
See the Engineering Design standards or the attached hard copy.
2015 Ocean County Science CurriculumGrade 7
Unit: Forces and Interactions
How can one describe physical interactions between objects and within systems of objects?
Students are able to apply Newton’s Third Law of Motion to relate forces to explain the motion of objects. Students also apply ideas about gravitational, electrical, and magnetic forces to explain a variety of phenomena including beginning ideas about why some materials attract each other while other repel. In particular, students develop the understanding that gravitational interactions are always attractive but that electrical and magnetic forces can be both attractive and negative. Students also develop ideas that objects can exert forces on each other even though the objects are not in contact, through fields. Students apply engineering practices and concept to solve a problem caused when objects collide. The crosscutting concepts of cause and effect; system and system models; stability and change; and the influence of science, engineering, and technology on society and the natural world serve as organizing concepts for these disciplinary core ideas. In these performance expectations, students are expected to demonstrate proficiency in asking questions, planning and carrying out investigations, and designing solutions, and engaging in argument; and to use these practices to demonstrate understanding of the core ideas.
# / STUDENT LEARNING OBJECTIVES (SLO) / Corresponding
PEs
1 / Apply Newton’s Third Law to design a solution to a problem involving the motion of two colliding objects.*[Clarification Statement: Examples of practical problems could include the impact of collisions between two cars, between a car and stationary objects, and between a meteor and a space vehicle.] [Assessment Boundary: Assessment is limited to vertical or horizontal interactions in one dimension.] / MS-PS2-1
2 / Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and the mass of the object.[Clarification Statement: Emphasis is on balanced (Newton’s First Law) and unbalanced forces in a system, qualitative comparisons of forces, mass and changes in motion (Newton’s Second Law), frame of reference, and specification of units.] [Assessment Boundary: Assessment is limited to forces and changes in motion in one-dimension in an inertial reference frame and to change in one variable at a time. Assessment does not include the use of trigonometry.] / MS-PS2-2
3 / Ask questions about data to determine the factors that affect the strength of electric and magnetic forces.[Clarification Statement: Examples of devices that use electric and magnetic forces could include electromagnets, electric motors, or generators. Examples of data could include the effect of the number of turns of wire on the strength of an electromagnet, or the effect of increasing the number or strength of magnets on the speed of an electric motor.] [Assessment Boundary: Assessment about questions that require quantitative answers is limited to proportional reasoning and algebraic thinking.] / MS-PS2-3
4 / Construct and present arguments using evidence to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects.[Clarification Statement: Examples of evidence for arguments could include data generated from simulations or digital tools; and charts displaying mass, strength of interaction, distance from the Sun, and orbital periods of objects within the solar system.] [Assessment Boundary: Assessment does not include Newton’s Law of Gravitation or Kepler’s Laws.] / MS-PS2-4
5 / Conduct an investigation and evaluate the experimental design to provide evidence that fields exist between objects exerting forces on each other even though the objects are not in contact.[Clarification Statement: Examples of this phenomenon could include the interactions of magnets, electrically-charged strips of tape, and electrically-charged pith balls. Examples of investigations could include first-hand experiences or simulations.] [Assessment Boundary: Assessment is limited to electric and magnetic fields, and limited to qualitative evidence for the existence of fields.] / MS-PS2-5
The SLOs were developed using the following elements from the NRC document A Framework for K-12 Science Education:
Science and Engineering Practices
Asking Questions and Defining Problems
Asking questions and defining problems in grades 6–8 builds from grades K–5 experiences and progresses to specifying relationships between variables, and clarifying arguments and models.
●Ask questions that can be investigated within the scope of the classroom, outdoor environment, and museums and other public facilities with available resources and, when appropriate, frame a hypothesis based on observations and scientific principles. (MS-PS2-3)
Planning and Carrying Out Investigations
Planning and carrying out investigations to answer questions or test solutions to problems in 6–8 builds on K–5 experiences and progresses to include investigations that use multiple variables and provide evidence to support explanations or design solutions.
●Plan an investigation individually and collaboratively, and in the design: identify independent and dependent variables and controls, what tools are needed to do the gathering, how measurements will be recorded, and how many data are needed to support a claim. (MS-PS2-2)
●Conduct an investigation and evaluate the experimental design to produce data to serve as the basis for evidence that can meet the goals of the investigation. (MS-PS2-5)
Constructing Explanations and Designing Solutions
Constructing explanations and designing solutions in 6–8 builds on K–5 experiences and progresses to include constructing explanations and designing solutions supported by multiple sources of evidence consistent with scientific ideas, principles, and theories.
●Apply scientific ideas or principles to design an object, tool, process or system. (MS-PS2-1)
Engaging in Argument from Evidence
Engaging in argument from evidence in 6–8 builds from K–5 experiences and progresses to constructing a convincing argument that supports or refutes claims for either explanations or solutions about the natural and designed world.
●Construct and present oral and written arguments supported by empirical evidence and scientific reasoning to support or refute an explanation or a model for a phenomenon or a solution to a problem. (MS-PS2-4)
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Connections to Nature of Science
Scientific Knowledge is Based on Empirical Evidence
●Science knowledge is based upon logical and conceptual connections between evidence and explanations. (MS-PS2-2),(MS-PS2-4)
21st Century themes and skills (This link is taken from the Partnership for 21st Century Skills)
●creativity and innovation
●critical thinking and problem solving
●communication
●collaboration
●information literacy
●media literacy
●information and communications technology (ICT)
●literacy
●flexibility and adaptability
●initiative and self direction
●social and cross cultural skills
●productivity and accountability
●leadership and responsibility / Disciplinary Core Ideas
PS2.A: Forces and Motion
●For any pair of interacting objects, the force exerted by the first object on the second object is equal in strength to the force that the second object exerts on the first, but in the opposite direction (Newton’s third law). (MS-PS2-1)
●The motion of an object is determined by the sum of the forces acting on it; if the total force on the object is not zero, its motion will change. The greater the mass of the object, the greater the force needed to achieve the same change in motion. For any given object, a larger force causes a larger change in motion. (MS-PS2-2)
●All positions of objects and the directions of forces and motions must be described in an arbitrarily chosen reference frame and arbitrarily chosen units of size. In order to share information with other people, these choices must also be shared. (MS-PS2-2)
PS2.B: Types of Interactions
●Electric and magnetic (electromagnetic) forces can be attractive or repulsive, and their sizes depend on the magnitudes of the charges, currents, or magnetic strengths involved and on the distances between the interacting objects. (MS-PS2-3)
●Gravitational forces are always attractive. There is a gravitational force between any two masses, but it is very small except when one or both of the objects have large mass—e.g., Earth and the sun. (MS-PS2-4)
●Forces that act at a distance (electric, magnetic, and gravitational) can be explained by fields that extend through space and can be mapped by their effect on a test object (a charged object, or a ball, respectively). (MS-PS2-5) / Crosscutting Concepts
Cause and Effect
●Cause and effect relationships may be used to predict phenomena in natural or designed systems. (MS-PS2-3),(MS-PS2-5)
Systems and System Models
●Models can be used to represent systems and their interactions—such as inputs, processes and outputs—and energy and matter flows within systems. (MS-PS2-1),(MS-PS2-4)
Stability and Change
●Explanations of stability and change in natural or designed systems can be constructed by examining the changes over time and forces at different scales. (MS-PS2-2)
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Connections to Engineering, Technology,
and Applications of Science
Influence of Science, Engineering, and Technology on Society and the Natural World
●The uses of technologies and any limitations on their use are driven by individual or societal needs, desires, and values; by the findings of scientific research; and by differences in such factors as climate, natural resources, and economic conditions. (MS-PS2-1)
Connections to other DCIs in this grade-band:
MS.PS3.A (MS-PS2-2); MS.PS3.B (MS-PS2-2); MS.PS3.C (MS-PS2-1); MS.ESS1.A (MS-PS2-4); MS.ESS1.B (MS-PS2-4); MS.ESS2.C (MS-PS2-2),(MS-PS2-4)
Articulation of DCIs across grade-bands:
3.PS2.A (MS-PS2-1),(MS-PS2-2); 3.PS2.B (MS-PS2-3),(MS-PS2-5); 5.PS2.B (MS-PS2-4); HS.PS2.A (MS-PS2-1),(MS-PS2-2); HS.PS2.B (MS-PS2-3),(MS-PS2-4),(MS-PS2-5); HS.PS3.A (MS-PS2-5); HS.PS3.B (MS-PS2-2),(MS-PS2-5); HS.PS3.C (MS-PS2-5);HS.ESS1.B (MS-PS2-2),(MS-PS2-4)
Interdisciplinary Connections:
ELA/Literacy -
RST.6-8.1 / Cite specific textual evidence to support analysis of science and technical texts, attending to the precise details of explanations or descriptions. (MS-PS2-1),(MS-PS2-3)
RST.6-8.3 / Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks. (MS-PS2-1),(MS-PS2-2),(MS-PS2-5)
WHST.6-8.1 / Write arguments focused on discipline-specific content. (MS-PS2-4)
WHST.6-8.7 / Conduct short research projects to answer a question (including a self-generated question), drawing on several sources and generating additional related, focused questions that allow for multiple avenues of exploration. (MS-PS2-1),(MS-PS2-2),(MS-PS2-5)
Mathematics -
MP.2 / Reason abstractly and quantitatively. (MS-PS2-1),(MS-PS2-2),(MS-PS2-3)
6.NS.C.5 / Understand that positive and negative numbers are used together to describe quantities having opposite directions or values; use positive and negative numbers to represent quantities in real-world contexts, explaining the meaning of 0 in each situation. (MS-PS2-1)
6.EE.A.2 / Write, read, and evaluate expressions in which letters stand for numbers. (MS-PS2-1),(MS-PS2-2)
7.EE.B.3 / Solve multi-step real-life and mathematical problems posed with positive and negative rational numbers in any form, using tools strategically. Apply properties of operations to calculate with numbers in any form; convert between forms as appropriate; and assess the reasonableness of answers using mental computation and estimation strategies. (MS-PS2-1),(MS-PS2-2)
7.EE.B.4 / Use variables to represent quantities in a real-world or mathematical problem, and construct simple equations and inequalities to solve problems by reasoning about the quantities. (MS-PS2-1),(MS-PS2-2)
Grade Level: 7 / Title of Unit: Force and Interactions
Stage 1 - Desired Results
Understandings:
Students will understand that…
●Objects can exert forces on each other even though the objects are not in contact
●Gravitational interactions are always attractive but that electrical and magnetic forces can be both attractive and negative
●The same basic rules govern the motion of all bodies, from planets and starts to birds and billiard balls / Essential Questions:
●How can one describe physical interactions between objects and within systems of objects?
Knowledge:
Students will know…
●an object is in motion if it changes position relative to a reference point
●when you know both the speed and the direction of an object’s motion, you know the velocity of the object
●acceleration is a change in velocity (increasing speed, decreasing speed, or a change in direction)
●a force is described by its strength and by the direction in which it acts.
●unbalanced forces acting on an object result in a net force and cause a change in the object’s motion.
●balanced forces acting on an object do not change the object’s motion.
●two factors affect the gravitational attraction between objects: mass and distance.
●an object at rest will remain at rest, and an object moving at a constant velocity will continue moving at a constant velocity, unless it is acted upon by an unbalanced force.
●acceleration depends on the object’s mass and on the net force acting on the object.
●if one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction on the first object.
●impact of collisions between two cars and between a car and stationary objects
●gravitational interactions are always attractive
●when two objects interact, each one exerts a force on the other that can cause energy to be transferred to or from the object
●magnetic forces can be both attractive and negative
●objects can exert forces on each other even though the objects are not in contact, through fields
●magnetic force depends on the magnitude of the charges, or magnetic strength
●electric forces can be both attractive and negative
●objects can exert forces on each other even though the objects are not in contact, through fields
●strength of electric force depends on magnitude of the current
●An electric current produces a magnetic field
●A magnetic field produced by a current has 3 distinctive characteristics: field can be turned on or off, have its direction reversed or have its strength changed / Skills:
Students will be able to…
●apply Newton’s Third Law of Motion to relate forces to explain the motion of objects
●apply ideas about gravitational, electrical, and magnetic forces to explain a variety of phenomena
●demonstrate proficiency in asking questions, planning and carrying out investigations, designing solutions, and engaging in arguments and to use these practices to demonstrate understanding of the core ideas
●describe ways that unbalanced forces cause changes in motion
●apply an engineering practice and concept to solve a problem caused when objects collide
●describe the difference between mass and weight
●investigate ideas that objects can exert forces on each other even though the objects are not in contact, through fields
Stage 2- Assessment Evidence
Performance Tasks and other evidence:
●Summative Assessments
oRST- Research Simulation Task
oUnit tests and quizzes
oLabs and engineering based projects
▪Apply Newton’s Laws to create a Lunar Landing System
▪Rocket building/launching (bottle, alka seltzer, stomp, etc)
●Formative Assessments
oGraphic Organizers & Guided Note Taking
oDirected Reading
oCooperative Group Learning
oHomework
oJournal Entries
Stage 3 – Learning Plan
Learning Activities:
●collision lab
●friction investigation (enrichment)
●distance time graph (enrichment activity)
●motion dot diagrams (differentiated activity)
●explain how friction can be helpful and harmful
●Electricity and magnetism lab; investigating forces between objects that are not in contact
●bubble tube (enrichment)
Digital information and technology integration: Indicate any special considerations as well as materials, resources (online, print, video, audio) or equipment.
●Force & Motion activity resource:
●Motion and Stability: Forces and Interactions:
●Electricity Unplugged:
●Fun with gravity and center of mass:
●The elephant and the feather:
●
Modifications: (ELLs, Special Education, Gifted and Talented)
* Follow all IEP modifications/504 plan
* Teacher tutoring
* Peer tutoring
* Cooperative learning groups
* Modified assignments
* Differentiated instruction
Presentation accommodations allow a student to:
* Listen to audio recordings instead of reading text
* Learn content from audiobooks, movies, videos and digital media instead of reading print versions
* Work with fewer items per page or line and/or materials in a larger print size
* Have a designated reader
* Hear instructions orally
* Record a lesson, instead of taking notes
* Have another student share class notes with him
* Be given an outline of a lesson
* Use visual presentations of verbal material, such as word webs and visual organizers
* Be given a written list of instructions
Response accommodations allow a student to:
* Give responses in a form (oral or written) that’s easier for him
* Dictate answers to a scribe
* Capture responses on an audio recorder
* Use a spelling dictionary or electronic spell-checker
* Use a word processor to type notes or give responses in class
* Use a calculator or table of “math facts”
Setting accommodations allow a student to:
* Work or take a test in a different setting, such as a quiet room with few distractions
* Sit where he learns best (for example, near the teacher)
* Use special lighting or acoustics
* Take a test in small group setting
* Use sensory tools such as an exercise band that can be looped around a chair’s legs (so fidgety kids can kick it and quietly get their energy out)
Timing accommodations allow a student to:
* Take more time to complete a task or a test
* Have extra time to process oral information and directions
* Take frequent breaks, such as after completing a task
Scheduling accommodations allow a student to:
* Take more time to complete a project
* Take a test in several timed sessions or over several days
* Take sections of a test in a different order
* Take a test at a specific time of day
Organization skills accommodations allow a student to:
* Use an alarm to help with time management
* Mark texts with a highlighter
* Have help coordinating assignments in a book or planner
* Receive study skills instruction
Assignment modifications allow a student to:
* Complete fewer or different homework problems than peers
* Write shorter papers
* Answer fewer or different test questions
* Create alternate projects or assignments
Curriculum modifications allow a student to:
* Learn different material (such as continuing to work on multiplication while classmates move on to fractions)
* Get graded or assessed using a different standard than the one for classmates
2015 Ocean County Science Curriculum
Grade 7
Unit: Energy
How can energy be transferred from one object or system to another?
Students understand qualitative ideas about energy including that the interactions of objects can be explained and predicted using the concept of transfer of energy from one object or system of objects to another, and that the total change of energy in any system is always equal to the total energy transferred into or out of the system. Students also understand that when objects are moving they have kinetic energy and that objects may also contain stored (potential) energy, depending on their relative positions. Students know the difference between energy and temperature, and begin to develop an understanding of the relationship between force and energy. Students are also able to apply an understanding of design to the process of energy transfer. The crosscutting concepts of scale, proportion, and quantity; systems and system models; and energy are called out as organizing concepts for these disciplinary core ideas. Students demonstrate proficiency in developing and using models, planning investigations, analyzing and interpreting data, and designing solutions, and engaging in argument from evidence; and to use these practices to demonstrate understanding of the core ideas in Energy.