Luis Armando Casso Echalar
Patient Math Tutor Who Makes Complex Topics Simple Through Visuals and Real-Life Examples
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Private tutor - Luis Armando Casso Echalar
Diploma degree
/ 30 min
Luis Armando - Know your tutor
My name is Luis Casso, students can call me Lucho. I've been an unofficial tutor for three years already, and my passion lies in teaching mathematics to anyone who needs help. I helped students from various academic levels, ranging from the last year of high school to undergraduate college students. I can help with any topic up to Calculus I, and I will find time for teaching and making sure that every student who requires my help finds all the sources they need. As a math major student, I got to understand how maths could be harder for any student and how that made every high school student to have some sort of rejection towards the topic, but I personally wanted to become a math teacher because I think that everyone can learn math, and math can be used to teach not only as a school subject, but a way to understand the world and how it works. That is why teaching is my passion.
Luis Armando graduated from American International School of Bolivia

Class overview
My teaching style goes hand in hand with making sure students understand the why behind things. Every formula has a reason to exist, and students need to grasp the logical process behind the terminology for a more solid kind of learning — rather than just memorizing formulas they’ll likely forget. I’m very patient and interactive when teaching, and I always try to go at a pace that students find comfortable. The topics I can teach are varied in content, and I find it easy to identify areas of mathematics that require specific logical processes. At the same time, I can teach different strategies and tricks so that students learn through mnemonic devices or visual examples — helping them understand how to approach any exercise or problem they encounter. I have experience working with several students and have been able to connect with them in different ways to help them understand the problems presented. Once they become comfortable with the concepts, they reach the solutions much more quickly.
Specialities of your tutor
Problem Solving
Test Strategy
Math Tricks and Hacks
Test prep strategies
Learning Plans

Mathematics concept taught by Luis Armando
The Student and Tutor reviewed first and second derivative tests to determine concavity, inflection points, maxima, and minima. They worked through problems requiring product, chain, and quotient rules. The session ended by starting a new problem which they will continue in the next class, with the Tutor promising to send notes from the class.
First Derivative Test
Second Derivative Test
Product Rule
Chain Rule
Quotient Rule
Inflection Points
Concave Up and Concave Down
The session focused on using first and second derivatives to analyze and sketch graphs of functions. The Student practiced finding critical points, determining concavity, and sketching a cubic function using derivative information. The session concluded with a brief explanation of limits at infinity and how they relate to functions like 1/x.
First Derivative and Graph Behavior
Finding Critical Points
Second Derivative and Concavity
Second Derivative Test for Local Extrema
Inflection Points
Sketching Graphs with Derivatives
Limits at Infinity
The Student and Tutor reviewed the application of derivatives to find absolute maximum and minimum values of functions, including quadratic and trigonometric functions. The session included practice problems involving the extreme value theorem and critical points. The Tutor explained the derivatives of sine and cosine functions and related trigonometric concepts.
Critical Points
Function Shapes and Derivatives
Derivatives of Trigonometric Functions
Radians and the Unit Circle
Extreme Value Theorem
The session focused on solving related rates problems, including scenarios involving boats moving at different speeds and a ladder sliding down a wall. The student practiced applying differentiation techniques to find rates of change and also reviewed linearization methods. The tutor recommended focusing on geometric formulas and visualizing problems to improve problem-solving skills.
Related Rates
Linearization and Approximation
Problem-Solving Strategy: Visualizing the Problem
Geometric Formulas in Related Rates
Implicit Differentiation with Respect to Time
Luis Armando also teaches
Elementary School Math
Geometry
High School Math
Middle School Math
Probability
Trigonometry
Teaching tools used by tutor
Practice worksheets
Visualization & Exploration
Solvers & Calculators
Digital whiteboard
Lesson Planner
Student types for classes
High School students
College students
Anxiety or Stress Disorders
Mathematics for Beginners
Home schooled
Elementary School students
Middle School students
Interactive lessons
Weekend lessons
Mobile joining
Open Q&A
Note taking
Chat for quick help

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