DiffiMath
13 Followers
St. Louis, Missouri, United States
About the store
I have taught for five years in the public sector and 2 years in the private sector in Missouri. Before this, I worked for a well-known educational technology company, where I created math formative and summative items that fit the state standards of all 50 states.
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Introduction to Domain and Range Activity
Domain and Range are so tough for my students to understand. The first part of this activity is a mini lesson where either the teacher or student-led groups discover how to draw boxes on the axes to help write the domain and range in interval notation. This activity has a Check for Understanding so that you can see at the end of the mini lesson how much your students have grown on this topic.
8th - 12th
Algebra, Algebra 2, PreCalculus
CCSS
HSA-CED.A.3
, HSF-IF.A.1
Showing Functions are Inverses Activity
I use this activity as a way to introduce my algebra 2 students to an application of function composition, proving that two functions are inverses. The activity is math heavy, so I recommend that it is used for your more advanced students, but the challenge is good for all.
9th - 11th
Algebra 2, PreCalculus
CCSS
HSF-BF.A.1c
, HSF-BF.B.3
, HSF-BF.B.4
Properties of Complex Numbers Activity
This is a very mathy activity where advanced students get to learn the formal proof process for showing parts of the closure of the set of complex numbers with respect to addition and multiplication. This is only for an advanced class and is meant as a challenge to get them to think of math as a language of understanding and not just the applications of numerical values.
10th - 12th
Algebra 2, Calculus, PreCalculus
CCSS
HSN-CN.A.2
What is a solution? Activity
I found that my students never truly understood the definition of a solution in terms of a function with regards to a table, graph, ordered pairs, and a function. This activity also includes a Check for Understanding at the end.
8th - 12th
Algebra, Algebra 2, PreCalculus
CCSS
HSA-REI.D.10
, HSA-REI.D.11
Show two functions are inverses Pretest_Posttest
After teaching function composition, use this pretest/posttest to see if your students are ready to venture into inverse functions. This is also a great way to begin an exponential/logarithmic function unit.
9th - 11th
Algebra 2, PreCalculus
CCSS
HSF-BF.A.1c
, HSF-BF.B.3
, HSF-BF.B.4
Properties of Complex Numbers Pretest_Posttest
Complex numbers are a fascinating topic to me, but my students get way too hung up on the term "imaginary". Use this pre and posttest to show how your students went from zero knowledge of this topic to heroes of the topic.
10th - 12th
Algebra 2, Calculus, PreCalculus
CCSS
HSN-CN.A.2
Finding Inverse Functions Pretest_Posttest
Use this pretest to show that your students have no idea how to find function inverses. Then, give it again later on in the unit so they can feel super smart.
10th - 12th
Algebra 2, PreCalculus
CCSS
HSA-CED.A.4
, HSF-BF.B.4
Function Composition Pretest_Posttest
Show those admins that you are the great teacher you think you are on this topic by determining growth metrics from a pre and posttest.
9th - 11th
Algebra 2, PreCalculus
CCSS
HSF-BF.A.1c
Determine average rate of change for functions Pretest_Posttest
Cut this into four separate pieces. Each student has ten minutes to complete as a pretest for this topic. Then, later on in the unit do the same thing to measure growth.
10th - 12th
Algebra 2, Calculus, PreCalculus
CCSS
HSF-IF.B.6
Rational Expressions: Pretest_Posttest
Begin your unit with this quick pretest. I use it as a posttest to show growth.
10th - 12th
Algebra 2, PreCalculus
CCSS
HSA-APR.A.1
Determine average rate of change for functions IP
Quick independent practice that even covers difference quotient at the end.
10th - 12th
Algebra 2, Calculus, PreCalculus
CCSS
HSF-IF.B.6
Finding Inverse Functions
This is the independent practice to see if my algebra 2 students understand how to find basic inverse functions. This is also great for a review on this topic in college algebra.
10th - 12th
Algebra 2, Calculus, PreCalculus
CCSS
HSA-CED.A.4
, HSF-BF.B.4
Function Composition Independent Practice
Nice homework to challenge your students and their ability to perform function composition.
9th - 11th
Algebra 2, PreCalculus
CCSS
HSF-BF.A.1c
Complex Conjugate Independent Practice
This is the short independent practice that I use to help students practice finding the conjugate of complex numbers. Enjoy!
10th - 12th
Algebra 2, PreCalculus
CCSS
HSN-CN.A.3
Graphing Complex Numbers Independent Practice
It's hard to find an easy IP for students on this topic so I made this one!
10th - 12th
Algebra 2, PreCalculus
CCSS
HSN-CN.B.4
Determine the average rate of change and even/odd for functions IP
Short and sweet independent practice where students can find aroc and even/odd for functions.
10th - 12th
Algebra 2, PreCalculus
CCSS
HSF-IF.B.6
Rational Expressions Independent Practice
This is a nice, short way to see if your Algebra II/Pre-calc students are ready to move on from this topic.
10th - 12th
Algebra 2, Calculus, PreCalculus
CCSS
HSA-APR.A.1
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About the store
Experience
I have taught for five years in the public sector and 2 years in the private sector in Missouri. Before this, I worked for a well-known educational technology company, where I created math formative and summative items that fit the state standards of all 50 states.
Teaching style
In my classroom, I take a constructivist approach allowing my students to facilitate the learning. My job is to create the activities to keep them topical and guide them along a path of success. I am a staunch practitioner of a thinking classroom where my students spend the majority of the time collaborating around the solution of a problem up at the boards around my classroom. To outsiders, if might be chaos. We just call it learning.
Awards & shining teacher moments
Teacher of the Month x4 (eligible each year, won each year)
My own education history
I attended Southeast Missouri State University to earn a Bachelor's degree in Secondary Education - Mathematics and a Bachelor's degree in Applied Mathematics. My passion for math led me to attend grad school at Southern Illinois University Carbondale and earn my Master's in Mathematics.
I have over 80 hours of training when it comes to working with students with autism, ESOL, and high risk students.
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