Master Desmos: 23 Lessons to Supercharge Your DSAT Prep
Dive into a comprehensive series of 23 lessons designed to make you a Desmos pro. Learn how to use Desmos effectively to solve problems faster and boost your accuracy.
Desmos is a game changer for your DSAT prep — helping you save time and improve your scores. Start mastering it today!
Lesson 1: Solve Any Equation Using Desmos
💡 Why This Is Essential
On the Digital SAT, Desmos acts as your built-in graphing calculator — and it’s a game changer. With the right Desmos skills, you can solve equations in seconds by simply typing and interpreting visual graphs.
In this lesson, you’ll learn how to use Desmos to:
- 🧮 Instantly solve linear and quadratic equations
- 📈 Visualize systems of equations and find their intersection
- ⚡ Avoid long algebra steps and get faster, accurate answers
🎥 Watch the full YouTube tutorial series below:
This is the most practical skill to master before jumping into full DSAT practice. Once you understand how to graph and solve with Desmos, math becomes visual and intuitive.
Lesson 2: Systems of Equations Using Desmos
📌 Visualize Multiple Equations at Once
In this lesson, you’ll learn how Desmos helps solve systems of equations with ease. Instead of solving two equations manually, Desmos lets you graph both and instantly find where they intersect — that’s your solution!
Here’s what you’ll be able to do after this lesson:
- 📉 Graph two or more linear equations together
- 📍 Identify the intersection point visually — the solution
- 🔁 Apply this method to both algebra and word problems
🎥 Watch the full walkthrough below:
This method saves valuable time on test day — and eliminates the chance of algebra mistakes. Master it, and you’ll breeze through system-based questions.
Lesson 3: Finding Intercepts Using Desmos
🎯 Master the X and Y Intercepts Instantly
Intercepts help you understand where a graph crosses the axes. Whether you’re solving equations or interpreting graphs on the DSAT, knowing how to find intercepts quickly is key — and Desmos makes this easier than ever.
In this lesson, you’ll learn how to:
- 📍 Identify x-intercepts (roots or solutions of an equation)
- 📍 Find the y-intercept visually and interpret its meaning
- 💡 Use Desmos tools to mark intercepts directly on the graph
🎥 Watch the full tutorial below:
Most DSAT math graphs involve intercepts in some form. With this skill, you’ll solve many problems just by looking — no solving required.
Lesson 4: Minimum & Maximum Using Desmos
📈 Easily Find Peaks and Valleys of Any Graph
Whether it’s a parabola or a curved function, questions about maximum and minimum values show up frequently on the DSAT. Desmos helps you visually pinpoint these extreme points in seconds.
In this lesson, you’ll learn how to:
- 🔻 Identify minimum points (lowest on the graph)
- 🔺 Find maximum values (highest point on the graph)
- 📍 Use Desmos to quickly locate and label these points with zero algebra
🎥 Watch the full tutorial below:
Finding max/min values using Desmos is not only quick — it’s reliable. You’ll avoid errors and solve more confidently.
Lesson 5: Solving Inequalities Using Desmos
🧮 Visualize Ranges & Shaded Solutions Instantly
Inequalities often trip students up because they involve abstract thinking — but Desmos turns that into simple shading. In this lesson, you’ll learn how to quickly solve and understand inequalities using graph visuals.
After this lesson, you’ll be able to:
- ✅ Graph linear and quadratic inequalities easily
- 📊 Understand shaded regions representing solution sets
- 📌 Compare inequality graphs and find overlapping solutions
🎥 Watch the full tutorial below:
Mastering inequalities with Desmos not only boosts your speed, but also ensures you never second-guess whether the solution should be open or closed — it’s all visual.
Lesson 6: How Many Solutions Using Desmos
🔍 Understand When Equations Have No, One, or Infinite Solutions
One of the most tested concepts on the DSAT is understanding how many solutions an equation or a system has. With Desmos, you can see exactly how graphs behave — whether they intersect, are parallel, or overlap completely.
In this lesson, you’ll learn to:
- 🔹 Graph and interpret one-solution systems
- 🚫 Spot parallel lines = no solutions
- ♾ Identify overlapping lines = infinite solutions
🎥 Watch the interactive video tutorial below:
This skill helps you quickly answer logic-based math questions on the DSAT. No calculations needed — just graph and observe!