Student
Info:
Wednesday/Thursday (block days) and
Friday,
Readiness Level: Biology, 9th
& 10th grade
Unit 2: Lesson 3
Learning Profiles: Strong Auditory and
Kinesthetic Profiles. Also visual.
Interests: varied, but include sports
(football, soccer, basketball), parkour, drama, socializing and video games.
Student
Connection:
Students learned
about water the day before. In addition, they learned about ant-acids
dissolving in water last week, during the “Plop, plop, fizz, fizz” lab. We will
connect that to teaching students about how antacids work to quench a
stomach-ache. Students will learn that their stomach has a pH of 1, and, if it
weren’t for the mucosal lining of our GI tract, we would have huge holes in our
stomach linings. In fact, people who suffer from that have “ulcers”. Connecting
acids and bases to our human bodies makes the content interesting to students
because it’s relevant to their bodies.
Rationale:
Enduring Understanding:
Students will understand what acidic,
basic, and neutral solution are. Students will understand how antacids reduces
the amount of acid in your stomach. Students will understand how pH is related
to hydrogen and hydroxide ion concentrations.
Essential Questions:
- What are acidic and basic solutions? What is a neutral solution?
- How would you increase the pH of a solution? How would you decrease the pH?
- What is the hydrogen ion concentration like in an acidic solution? In a basic solution?
- What is the hydroxide ion concentration like in a basic solution? In an acidic solution?
(Consider using a graphic organizer for 3 & 4)
Instructional Strategies:
Provide content with a PowerPoint
presentation, process (quick write & share in response to questions
embedded in the presentation), and product (Acids and Bases laboratory
activity; Unit 2 Quiz). Graphic organizer for properties of acidic vs. basic
solution.
Student Activities:
Provide supports for varied readiness
levels (visual and auditory presentation, think-quick-write-share at end of
presentation), learning profiles and interests (visual and auditory
presentation; lab for hands-on learning (kinesthetic)). Complete graphic
organizer on properties of acids and bases. Unit 2 quiz to check for
understanding and identify areas to review before test next week.
Content
Standards:
Grades 9 & 10 Biology
1: “Cell Biology”
b. “Students
know that enzymes are proteins that catalyze biochemical reactions without
altering the reaction equilibrium and the activities of enzymes dependon the
temperature, ionicconditions, and the pH of the surroundings."
h.
“Students know most macromolecules
(polysaccharides, nucleic acids proteins, lipids) in cells and organisms are
synthesized from a small collection of simple precursors.” (State Board of
Education, 2002).
ELD
Standards:
EL students are ELD III/IV
Part I: Interacting in Meaningful Ways
1.
Exchanging
information/ideas
2.
Interacting via
written English
5.
Listening actively
Part II: Learning About How English
Works
1.
Understanding text
structure
2.
Understanding
cohesion
Objective:
By the end of this unit students will
be able to:
·
Explain what
acidic and basic solutions are.
·
Explain what pH
measures.
·
Compare acidic
and basic solutions in terms of their hydrogen and hydroxide ion concentrations.
Assessment
Plan:
Entry Level—Students will start with a
warm-up activity by summarizing their notes on water from the day before. The
teacher will check for understanding by calling on three students to share
their summaries.
Formative—The teacher will check for
understanding periodically by including questions on slides embedded in the
PowerPoint presentation. Students will “think-quick-write-share” in response to
these questions. In addition, the exit ticket will include calling on students
at random to answer questions written in the margins of their Cornell-style
notes, such as:
a.
What is the difference between acidic and basic solutions?
b.
What does pH
measure?
c.
Describe the
hydrogen ion concentration of an acidic and a basic solution.
d.
Do the same for
hydroxide ion concentration.
Summative—Students will complete a lab
on Acids and Bases, which will be peer graded as I review the answers in class.
Finally, students will take a quiz on Unit 2 on Friday to assess whether they
have learned the key points of this unit.
Differentiation Strategies:
Content
Warm-Up
Activity—write summary and share with class.
Check to ensure
students are taking Cornell notes during presentation.
Think-pair-share
during PowerPoint presentation.
Handout
to explain labs.
Process
Teacher
will arrange students in groups for the lab and poster.
Teacher will circulate during student activities to
answer questions, check for understanding, and guide students in the right
direction.
Teacher
will review material for Unit 2 quiz by reviewing material and answering
questions.
Product
Students
will follow handout guidelines for lab.
Students
will peer-teach each other within their lab groups.
Students will be instructed to study for Unit 2 Quiz
and will have opportunities for review with teachers.
Students who need extra time to finish certain
assignments or extra teacher assistance are invited to come after school (or
make an appointment during lunch or before school).
Further
Ideas:
Students love to eat. We can connect
macromolecules and many ideas of Unit 2 (The Chemistry of Life) to nutrition.
Another activity where students can learn about pH, as well as solubility of
different mixtures in water, is to test the pH and solubility of several
different types of foods, such as: orange juice, lemon juice, apple juice,
vinegar, egg white, meat, fish, fruits, tomato, and vegetables.
Resources:
1.
PowerPoint
presentation, “pH”
2.
Acids and bases
lab
3.
Unit 2 quiz
No comments:
Post a Comment