MS-LS1-1
The standard
Conduct an investigation to provide evidence that living things are made of cells, either one cell or many different numbers and types of cells.
Next Generation Science Standards
What this standard means
Students need to gather evidence, not just memorize that organisms have cells. They should use microscopes or images to compare plant, animal, and single-celled samples, then explain how the evidence shows that living things are made of cells.
Mastery looks like a student pointing to specific observations, such as cell walls, nuclei, or many repeated cell units, and using them to support a claim. Students often mix up cells with atoms, think all cells look the same, or assume anything small under a microscope is alive.
Ways to teach it
- Have students prepare onion skin and cheek cell slides, sketch what they see, and label visible cell structures from a microscope view.
- Ask students to write a claim, evidence, reasoning response to: How do microscope observations show that organisms are made of cells?
- Show four microscope images, two living and two non-living, and have students sort them with one evidence sentence for each choice.
- Connect to pond water by showing a video of paramecia or amoebas and asking how one cell can carry out life functions.
Plan a lesson for MS-LS1-1
Generate a complete lesson plan aligned to this standard, with objectives, activities, and materials. Free, no account needed.
Related standards
- 3-LS3-1
Analyze 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 o...
- MS-LS1-3
Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.
- MS-LS1-2
Develop and use a model to describe the function of a cell as a whole and ways parts of cells contribute to the function.
- HS-LS1-1
Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life thr...