--- title: "Your turn: whiteboards that check your work | DuckyHelper" url: "https://duckyhelper.com/features/whiteboard/" description: "Write your working and DuckyHelper checks it: the first wrong line marked with why on a Mac, and Eddy's whiteboard for a quick drawing or check." updated: "2026-10-09" --- Mac app # Your turn: whiteboards that check your work DuckyHelper checks your working, not just your final answer. In the Mac app, write your steps on a scratchpad and press Check my work: every line is checked exactly, and the first wrong one is marked with the reason, so you fix it yourself. In the Eddy tab, Eddy's whiteboard draws a quick picture of an idea and gives you a quick check to answer. [Download for Mac](https://duckyhelper.com/download/)[Get the Mac app](https://duckyhelper.com/download/) Check your math, on a Mac ## The first wrong line, and why. Ask is this right? about the working on your screen, or say open a scratchpad and write your steps there, by pen or by typing, one per line. Press Check my work. A computer algebra check goes through every line: right lines get a tick, and the first wrong one is marked with what went wrong. Fix it and check again. [Guide: Check your math](https://docs.duckyhelper.com/study/math-check/) Checked exactly Each line is compared with the one before it by computer algebra, not by a guess, so a slip in the middle of right-looking work is found. The answer stays yours It tells you which line is wrong and why, like not equal to the line before, add the five numbers again. It does not write the fix for you. Eddy's whiteboard ## A quick drawing, in the Eddy tab. In Eddy, open Whiteboard and tell Eddy what to draw: a food web, a force diagram, a number line. Eddy draws it on a small whiteboard one mark at a time while it explains, so you see how the idea fits together. [Guide: The whiteboard](https://docs.duckyhelper.com/eddy/whiteboard/) Open it your way Whiteboard on Eddy's start page, or Cmd + B. Eddy asks: what should Eddy draw on the whiteboard? A board you share The Mac app also has a shared whiteboard you both draw on, with a pen, shapes, text and an eraser: menu bar duck, Open Whiteboard. Ducky's drawing appears stroke by stroke as it talks. Quick check ## Then answer one question. Ask for a quick check and Eddy gives you a question on what it just drew: if there were fewer grasshoppers, what might happen to the frogs? Pick an answer and Eddy tells you if you are right, and why. [Quizzes that check you](https://duckyhelper.com/features/quizzes/) Stuck before you start? ## A hint, then a bigger hint, then the answer. In the Mac pill, practice problems come with a Hint button. Each press opens one more rung: a nudge, a bigger hint, the worked step, and the answer only last. ### Nudge Where to start, in a sentence. ### Bigger hint The idea you need, said plainly. ### Worked step One step shown, so you can do the rest. ### The answer, last Only if you still want it. ## Feedback while it still helps. Finding out which line went wrong, right after you wrote it, is worth more than a mark on a test a week later. Every check in DuckyHelper tells you where and why, and leaves the fix to you. The learning science behind it: [Feedback right away, on the step](https://duckyhelper.com/research/principles/immediate-feedback/). [Hints first, not answers](https://duckyhelper.com/features/hints-not-answers/) ## How to use it [Guide: The whiteboard](https://docs.duckyhelper.com/eddy/whiteboard/)[Guide: The shared whiteboard](https://docs.duckyhelper.com/mac/whiteboard/)[Guide: Check your math](https://docs.duckyhelper.com/study/math-check/) ## Frequently asked questions ### Is there an app that checks my math work and shows where I went wrong? Yes. In the DuckyHelper Mac app, write your working on the scratchpad and press Check my work, or ask is this right? about the work on your screen. Every line is checked by computer algebra, and the first wrong line is marked with the reason, so you can fix it. ### Can Eddy check my work too? Check your math with the scratchpad is in the pill. In the Eddy tab, open your worksheet in Eddy: you write your answer on the page and Eddy checks what you wrote, with a hint beside the question if you need one. [Open your homework with Eddy](https://duckyhelper.com/features/homework-files/) shows how. ### Will it give me the answer? Not first. It marks the wrong line and says why, and the fix is yours. In the Mac pill, the Hint button opens a nudge, then a bigger hint, then a worked step, and the answer only last. ### What is the difference between the whiteboard and the blackboard? The blackboard is for working something out: Eddy writes and draws step by step in time with its voice, then gives you a turn. The whiteboard is smaller and quicker: a drawing of an idea, like a food web, and a quick check to answer. [The blackboard](https://duckyhelper.com/features/blackboard/) has more. ### What can I write on the scratchpad? One step per line, with the pen or by typing. Check my work compares each line with the one before it, so it works for arithmetic, algebra and the steps of a calculation like a mean, a median or an equation you are solving. ## More features ### Ask out loud and hear the answer: press fn on a Mac, or talk to Eddy in the app's Eddy tab Ask DuckyHelper out loud and it answers out loud while it shows you the steps. On your Mac, press fn in any app, or talk to Eddy in its tab. ### Say quiz me: tap, type math or answer true or false, and every miss comes with why Say quiz me and DuckyHelper writes a quick quiz on what you are learning: tap, type math or answer true or false, and every miss comes with why. ### Worked steps, one move each, that you can keep, and graphs you can hover, zoom and slide Ask DuckyHelper to work it out and get worked steps, one move each, plus graphs you can hover, zoom and change with sliders. Keep the steps as a note. ### Small sandboxes you run yourself: drag the ball, move a slider, read the numbers Ask DuckyHelper to show you how a pendulum, a projectile or a circuit works and get a small sandbox to run yourself: drag, change a slider, read the numbers. ### It asks back and gives the next hint before an answer, so you do the thinking DuckyHelper asks back and gives the next hint before it gives an answer, so you do the thinking. Why that matters, and how it works on a Mac and in Eddy. ### Run your code against tests, then watch it step by step with every variable as it changes DuckyHelper runs your code against tests and plays it back step by step, every variable as it changes, so you see why it gives the wrong answer. ## Keep reading ### Math homework: your own lines checked, and the slip found with you Math homework help that checks your own working line by line, marks where it went wrong and lets you fix it. Steps, graphs and hints when you need them. ### Every DuckyHelper feature: what it does, where it runs, and a short film of each What DuckyHelper for Mac does: Eddy teaches out loud on a blackboard, and Ducky sees your screen, draws on it and walks you through your own apps. ## Show your working Open Eddy's whiteboard in the Eddy tab, or press fn on your Mac and ask is this right? [Download for Mac](https://duckyhelper.com/download/) [See what it does](https://duckyhelper.com/features/) The Mac app needs Apple silicon and macOS 14 Sonoma or later. There is no Chromebook, Windows or web version right now.