How to Ace Peer Tutoring with Live Screen Drawing

Visual Learning is Key

Have you ever tried to explain a complex calculus formula or a confusing piece of code to a classmate over a standard video call? Pointing at the screen and saying "look at that line there" just doesn't work. Research from cognitive science consistently shows that visual explanations — diagrams, annotations, highlighted text — dramatically improve comprehension and retention.

A 2024 study published in the Journal of Educational Psychology found that students who received visually annotated explanations scored 34% higher on retention tests compared to those who received verbal-only explanations. The takeaway is clear: if you're tutoring someone, drawing on the screen isn't just helpful — it's essential.

Why Standard Video Calls Aren't Enough

Tools like Zoom, Google Meet, and Microsoft Teams have basic screen sharing, but they lack real-time drawing capabilities during a share session. Some workarounds exist:

Workaround	Drawback
Using a physical whiteboard	Camera quality makes writing hard to read; awkward positioning
Shared Google Doc/Slides	Not suitable for freehand drawing; laggy real-time editing
Third-party whiteboard apps (Miro, Jamboard)	Separate from your content; can't draw over your actual document or code
Tablet with stylus	Expensive hardware requirement; not everyone has one

The Power of On-Screen Whiteboarding

openrees features an incredibly responsive Live On-Screen Whiteboard tool. While recording your screen or presenting slides, you can instantly bring up a drawing toolbar and annotate directly over whatever is on your screen.

Available Drawing Tools

• Freehand Pen: Draw anything — equations, diagrams, arrows, circles — with adjustable thickness and multiple color options. The stroke rendering uses quadratic Bézier curves for smooth, natural-looking lines even with a mouse.
• Glowing Highlighters: Draw attention to specific sentences in a textbook PDF or highlight syntax in your code editor. The semi-transparent glow effect makes highlighted areas pop without obscuring the underlying content.
• Laser Pointer: Use a temporary laser pointer that trails your mouse to guide your study group's eyes without leaving permanent marks. The trail fades automatically after a few seconds.
• Shapes and Arrows: Quickly draw perfect circles, rectangles, lines, and arrows to map out physics problems, software architectures, or biological diagrams. Hold Shift for perfectly straight lines or proportional shapes.
• Text Tool: Type annotations directly on screen. Useful for labeling parts of a diagram or adding quick notes to a slide.
• Eraser: Selectively remove specific annotations without affecting your underlying content.

Practical Use Cases for Students

Here are real scenarios where on-screen drawing dramatically improves study sessions:

• Math tutoring: Open a textbook PDF in openrees, present it fullscreen, then draw step-by-step solutions directly on the problem. Circle the key variables, draw arrows showing substitutions, and write intermediate results.
• Code review: Share your IDE screen, then use the highlighter to mark the specific lines of code you're discussing. Draw flowchart arrows between function calls to show execution order.
• Biology/Anatomy: Open a diagram as an image slide, then use the pen to label parts, trace pathways, or circle relevant structures.
• Language learning: Open a foreign-language text, highlight vocabulary words, and draw connections between related terms.

Recording Your Tutoring Sessions

One of the most powerful features is that all your annotations are recorded along with your screen and webcam. This means you can record a quick 2-minute explanation of a homework problem, draw out the solution live, and send the MP4 directly to your classmate. They can watch it as many times as they need to understand the concept.

This creates a library of personalized, visual study materials that are far more effective than typed notes or generic YouTube tutorials. Each video is tailored to the specific problem your study group is working on, with your own visual annotations guiding the explanation.