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
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
Solving Quadratic Equations Activity
In this activity, a group of three students will each solve ten quadratic equations, using either factoring, completing the square, or quadratic formula. When a student finishes a problem, they will write their solutions in the correct spot on the answer sheet. When all three students have finished the same question, all three of their answers should be the same.
8th - 10th
Algebra
CCSS
HSA-REI.B.4
, HSA-REI.B.4a
, HSA-REI.B.4b
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
Show and explain the steps for solving an absolute value equation minilesson
This minilesson is a great way to guide students through the whys and hows for solving absolute value equations. Use the Check for Understanding at the end to get feedback from your students on what they learned.
8th - 10th
Algebra
CCSS
HSA-REI.A.1
, HSA-REI.B.3
Determine the slope activity
In this activity, students must match slopes, slope between points, linear functions, and graphs of lines with each other so that they match. It is a great way for students to practice translating between all of these different representations of slope.
8th - 11th
Algebra, Algebra 2, Geometry
CCSS
HSF-IF.B.6
, HSF-IF.C.9
Geometric Constructions Gallery Walk
After my students learn how to do some of the basic constructions, I have them work through this gallery walk in pairs. They have to use a compass and straightedge and show me their results in their notebook.
9th - 11th
Geometry
CCSS
HSG-CO.D.12
, HSG-CO.D.13
Geometry Definitions Pretest_Posttest
Great way to show growth early with this. Give one to a student and then another at the end of the unit to see what they learned.
9th - 11th
Geometry
CCSS
HSG-CO.A.1
Solving Absolute Value Equations Pretest_Posttest
Admins got you down? Use this pre and post test to show how special your students are and how quickly they can learn new concepts.
8th - 10th
Algebra
CCSS
HSA-REI.A.1
, HSA-REI.B.3
Determine slope of a linear function Pretest_Posttest
Use this to show growth by giving it to your students at the beginning and the end of the unit. Each printout has four different tests.
8th - 10th
Algebra, Geometry
CCSS
HSF-IF.B.6
, HSF-IF.C.9
Comparing Different Representations of Functions
A fun Venn Diagram activity where students can show whether a relation is a function or not by using the definition.
8th - 10th
Algebra, Algebra 2
CCSS
HSF-IF.A.1
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
Compound Inequalities Matching Activity
Match the compound inequality on the left with a solution on the right. Great way to assess without being a worksheet.
8th - 10th
Algebra
CCSS
HSA-REI.B.3
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
Compare Different Representations of Functions Pretest_Posttest
Great little pretest and posttest for algebra students first learning about functions. Cut along the dotted line and use one as a pretest and the other as a posttest to show growth.
8th - 10th
Algebra
CCSS
HSF-IF.A.1
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
Solve Quadratic Equations Pretest_Posttest
Use this pre and posttest to show your students how much they have grown when it comes to solving quadratic equations.
8th - 10th
Algebra
CCSS
HSA-REI.B.4
, HSA-REI.B.4a
, HSA-REI.B.4b
Rewrite Formulas Pretest_Posttest
Solving literal equations can be scary. I mean math should have at least a couple of numbers in it, right? Use this pre and posttest to show how much your students have grown from your lessons!
8th - 10th
Algebra
CCSS
HSA-SSE.B.3
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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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