Teach Adaptations and Natural Selection with this life science lesson for Grades 6–8 . The set has 25 slides, delivered as an editable PowerPoint and as a matching printable PDF, so you can present it on the board or print a copy for a student who needs a paper version. The PowerPoint includes teacher speaker notes for each slide.

What students practice

• ADAPTATIONS AND NATURAL SELECTION: Expected model: individuals differ in inherited traits; some differences affect successful reproduction in a specific environment.
• ADAPTATIONS AND NATURAL SELECTION: On pale substrate, darker prey may be easier to see.
• ADAPTATIONS AND NATURAL SELECTION: Successful learner can identify an adaptation, distinguish inherited and acquired traits, explain selection acting across generations, interpret a model, and define controlled v…
• ADAPTATIONS AND NATURAL SELECTION: An adaptation is an inherited trait that tends to improve survival and reproduction in a specific environment.
• ADAPTATIONS AND NATURAL SELECTION: Structural: coloring and body morphology; behavioral: shelter-seeking at hot times; physiological: water conservation.
• ADAPTATIONS AND NATURAL SELECTION: Correct: populations often contain standing genetic variation.
• ADAPTATIONS AND NATURAL SELECTION: Natural selection acts on existing heritable variation; mutation and reproduction contribute to the variability from which selection can act.
• ADAPTATIONS AND NATURAL SELECTION: An inherited allele may contribute to pigmentation.
• ADAPTATIONS AND NATURAL SELECTION: Initial heritable variation, an environmental challenge, unequal reproductive success, and resulting shifts in trait frequencies across many generations provide a valid explanat…
• ADAPTATIONS AND NATURAL SELECTION: The contrasting background alters conspicuousness of model prey; a change of substrate may reverse the relative visibility of the same disc color.
• ADAPTATIONS AND NATURAL SELECTION: A heritable camouflage pattern can be favored if it tends to improve net reproduction in that environment, perhaps by reducing predation.
• ADAPTATIONS AND NATURAL SELECTION: Thicker beaks can exert stronger force; slender beaks can reach narrow spaces; curved beaks can handle certain foods.
• ADAPTATIONS AND NATURAL SELECTION: Under different backgrounds, contrast and likely detectability may differ.
• ADAPTATIONS AND NATURAL SELECTION: The Arabian oryx has a light coat and traits associated with life in dry environments.
• ADAPTATIONS AND NATURAL SELECTION: In a suitable hypothetical setting, variants associated with greater relative reproductive success may increase in frequency over many generations.
• ADAPTATIONS AND NATURAL SELECTION: Natural selection can lead to population-level evolutionary change.

What’s included (25 slides)

• Editable PowerPoint (25 slides, with teacher speaker notes)
• Printable PDF of the same 25 slides

How to use it in class

1. Project the PowerPoint (or the PDF) and work through the slides with the class.
2. Use the speaker notes for questions to ask, common misconceptions and a model answer.
3. Close with a short oral recap of the key ideas from the last slides.
4. Print selected slides for notebooks, absent students or a sub plan.

At a glance

• Grade: 6–8
• Subject: Life Science (Adaptations and Natural Selection)
• Pages: 25
• Format: Editable PPTX + printable PDF; instant digital download after purchase