How to learn Grade 2: Science

Tennessee academic standards: Science, Grade 2

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1. Links Among Engineering, Technology, Science, and Society

Recording Data: Gather and record data using simple methods such as tables, tally charts, and drawings to help answer questions

Modelling with Sketches: Develop a simple sketch, drawing, or physical model to illustrate how the shape of an object helps it function as needed to solve a given problem
Comparing Design Solutions: Analyse data from tests of two objects designed to solve the same problem to compare the strengths and weaknesses of each design
Simple Design Problems: Define a simple design problem reflecting a need or want that includes specified criteria for success and constraints on materials, time, or cost

Shapes of land and water: Develop a model to represent the shapes and kinds of land (mountains, valleys, plains) and bodies of water (rivers, lakes, oceans) in an area
Where water is found on Earth: Identify where water is found on Earth and understand that water can exist as solid (ice) or liquid, recognising water in oceans, rivers, glaciers, and underground
Preventing Erosion: Compare multiple solutions designed to slow or prevent wind or water from changing the shape of the land

Fast & Slow Earth Changes: Understand that Earth's surface changes: some changes are quick (eruptions, earthquakes) and some are slow (wind, water wearing away rock)

Inherited characteristics: Analyse and interpret data to provide evidence that plants and animals have traits inherited from parents and that variation of these traits exists in a group of similar organisms

Changing Environments: Recognise that environments can change and that this can sometimes pose dangers and challenges to living things
Plants and animals in their habitats: Use a model to represent the relationship between the needs of different plants and animals and the places they live, connecting organism needs to habitat features
How animals adapt to environments: Identify how animals and plants are adapted to suit their environment and understand that adaptation may lead to evolution over time

Animal Classification Vocabulary: Use vocabulary for classifying animals and describing life cycles — vertebrate, invertebrate, mammal, bird, reptile, amphibian, fish, insect, arachnid, larva, pupa, metamorphosis, gestation, offspring, complete metamorphosis, incomplete metamorphosis — and apply these correctly when sorting and comparing organisms
Life Cycles of Organisms: Develop models to describe that organisms have unique and diverse life cycles but all share the common stages of birth, growth, reproduction, and death
Animal Body Groups: Describe and compare the external body structure of common animals across groups (fish, amphibians, reptiles, birds, mammals)
Senses, Brain & Responses: Use a model to describe that animals receive information through their senses, process it in their brain, and respond in different ways

Waves & How They Move: Develop a model of waves to describe patterns in terms of amplitude and wavelength, and understand that waves can cause objects to move
Communication with Light & Sound: Design and build a device that uses light or sound to solve the problem of communicating over a distance
Vibrations & Sound: Understand that vibrating materials can make sound, and that sound can make materials vibrate

Friction & Surfaces: Compare how things move on different surfaces, noticing that some surfaces create more friction than others
What happens when things collide: Ask questions and predict outcomes about the changes in energy that occur when objects collide

Pushes & Pulls: Understand that pushes and pulls are forces that can change the speed or direction of an object's motion, and compare the effects of different strengths and directions