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Skills available for Minnesota seventh-grade science standards

Standards are in black and IXL science skills are in dark green. Hold your mouse over the name of a skill to view a sample question. Click on the name of a skill to practice that skill.

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1 The Nature of Science and Engineering

  • 1 The Practice of Science

    • 1 Science is a way of knowing about the natural world and is characterized by empirical criteria, logical argument and skeptical review.

      • Understand that prior expectations can create bias when conducting scientific investigations.

      • Understand that when similar investigations give different results, the challenge is to judge whether the differences are significant, and if further studies are required.

    • 2 Scientific inquiry uses multiple interrelated processes to investigate questions and propose explanations about the natural world.

  • 3 Interactions Among Science, Technology, Engineering, Mathematics and Society

    • 4 Current and emerging technologies have enabled humans to develop and use models to understand and communicate how natural and designed systems work and interact.

2 Physical Science

4 Life Science

  • 1 Structure and Function in Living Systems

  • 2 Interdependence among Living Systems

    • 1 Natural systems include a variety of organisms that interact with one another in several ways.

    • 2 The flow of energy and the recycling of matter are essential to a stable ecosystem.

      • Recognize that producers use the energy from sunlight to make sugars from carbon dioxide and water through a process called photosynthesis. This food can be used immediately, stored for later use, or used by other organisms.

      • Describe the roles and relationships among producers, consumers and decomposers in changing energy from one form to another in a food web within an ecosystem.

      • Explain that the total amount of matter in an ecosystem remains the same as it is transferred between organisms and their physical environment, even though its form and location change.

  • 3 Evolution in Living Systems

    • 1 Reproduction is a characteristic of all organisms and is essential for the continuation of a species. Hereditary information is contained in genes which are inherited through asexual or sexual reproduction.

    • 2 Individual organisms with certain traits in particular environments are more likely than others to survive and have offspring.

  • 4 Human Interactions with Living Systems

    • 1 Human activity can change living organisms and ecosystems.

      • Describe examples where selective breeding has resulted in new varieties of cultivated plants and particular traits in domesticated animals.

      • Describe ways that human activities can change the populations and communities in an ecosystem.

    • 2 Human beings are constantly interacting with other organisms that cause disease.

      • Explain how viruses, bacteria, fungi and parasites may infect the human body and interfere with normal body functions.

      • Recognize that a microorganism can cause specific diseases and that there are a variety of medicines available that can be used to combat a given microorganism.

      • Recognize that vaccines induce the body to build immunity to a disease without actually causing the disease itself.

      • Recognize that the human immune system protects against microscopic organisms and foreign substances that enter from outside the body and against some cancer cells that arise from within.