Kate Edgren—Sample Middle School Lesson

Today’s Agenda Driving Question: How can we use the principles of genetics and probability to create the next hit kid’s character? GOALS: Students will be able to successfully complete a Punnett Square and identify parent and offspring genotypes and phenotypes Students will be able to express how probability can be used to predict inheritance Announcements: Punnett Squares Quiz on Thursday! Activities: Review from Yesterday! Toy Babies! Heredity Discussion BrainPop Punnett Square Practice + HW (would have link to options) Exit Ticket Homework/Next Steps: HW due tomorrow! (turn it in today if you’re done!)

Sample Agenda  urses/agenda/ /2014/3/26 urses/agenda/ /2014/3/26

Lesson Background  Lesson in a Genetics project  minute class  7 th / 8 th grade science  1-1 Computers  Information already introduced:  Genotype  Phenotype  Gene vs. allele  Heterozygous vs. Homozygous

Toy Babies!  Predict what your toy couple’s babies would look like. Use the paper provided to draw and/or describe their offspring.  But first—girl or boy?!? Come to Mrs. Edgren to get a coin. Heads = Girl, Tails = Boy

Think, Pair, Share  Think about WHY your baby looks like it does.  Pair with someone next to you.  Share and compare your drawings.  Be ready to share out some observations with the class!

How does heredity work?

Dominant vs. Recessive  A dominant allele is one that “shows-up” in an organism when it is present.  Because it is DOMINANT we represent it with a CAPITAL letter.  Examples: AGHQAGHQ

Dominant vs. Recessive  A recessive allele is one that “hides” in an organism unless there is no dominant gene present.  Because it is recessive, we represent it with a ___________________ letter.  Examples: aghqaghq

Brain Pop Video  Please take 3 notes and list Need to Knows on your worksheet!  andgenetics/heredity/ andgenetics/heredity/  Share out!

Punnett Square Practice  In flowers, purple flowers are dominant to white flowers. Cross a purple flower (PP) with a white flower (pp).

HOMEWORK  OPTIONS  Complete WS  Play this game, print final screen to turn in!this game  Mini-Workshop at board with Mrs. Edgren (she’ll let you know when you’ve done enough practice!)  DUE TOMORROW

Exit Ticket  Review today’s goals:  Students will be able to successfully complete a Punnett Square and identify parent and offspring genotypes and phenotypes  Students will be able to express how probability can be used to predict inheritance On a post-it…. Draw the smiley face that represents how you’re feeling about these goals. Explain. Give Mrs. Edgren a grade (A-F) on how well she helped you meet these goals today. Explain.

Lesson Debrief  Fill-in matrix  Make observations  Questions  Additional Resources