One-Armed Robot Letters: How To Form r b n h m k p
The one-armed robot letters are r, b, n, h, m, k and p. Each starts with a straight line down, then goes back up the same line and over, like a robot lifting its arm. Press play to watch them formed, then try the start-dot quiz.
On this page
- What Are One-Armed Robot Letters?
- Which Letters Are One-Armed Robot Letters?
- How Do You Form Each One-Armed Robot Letter?
- What Mistakes Do Children Make With One-Armed Robot Letters?
- Do All Schemes Put The Same Letters In This Family?
- What Comes Next After One-Armed Robot Letters?
- Questions About One-Armed Robot Letters
Play The One-Armed Robot Letters
Tap Where It Starts
Tap or click where this letter starts. The letter then writes itself from the right spot.
b And d Start Differently
What Are One-Armed Robot Letters?
One-armed robot letters are the letter family that starts with a straight line down, then goes back up the same line and over. BBC Bitesize says they "always start by going straight down, up and over".
The important part is the retrace. The pencil goes back up the line it just drew, without lifting off the paper. On the tool that retraced line lights up so children can see it. This is one of the four letter families.
Which Letters Are One-Armed Robot Letters?
There are seven: r, n, m, h, b, p, k.
BBC Bitesize lists them as b, h, k, m, n, p and r. The order above is the one many classes teach, from the simplest arm to the more complex letters.
How Do You Form Each One-Armed Robot Letter?
Each one starts with the same straight line down. The arm, the arches or the tail are what differ.
| Letter | Start | Then | Watch out for |
|---|---|---|---|
| r | The middle line | Down, back up, over a short arm | An arm that is too long or too round |
| n | The middle line | Down, back up, over the hill, down | Lifting instead of going back up |
| m | The middle line | Down, back up, over, down, back up, over, down | Hills of different heights |
| h | The top line | Down, back up, over the hill, down | Two separate strokes |
| b | The top line | Down, back up, round to close the bowl | Drawing the bowl first |
| p | The middle line | Down below the line, back up, round the bowl | Drawing the bowl first |
| k | The top line | Straight down, back up a little, then out, in and out without lifting | A gap between arm and stem |
BBC Bitesize adds that k breaks the pattern: it has no curve. The letter formation page has an animation for each.
What Mistakes Do Children Make With One-Armed Robot Letters?
- Starting at the bottom. These letters are drawn from the top down.
- Lifting the pencil instead of retracing. The arm should grow out of the line just drawn.
- Drawing b with the bowl first. That is the movement of d, and it is the root of most b and d mix-ups. Watch b and d side by side on the tool, or read b and d reversal.
- Uneven arches on m. Both hills should be the same height.
Do All Schemes Put The Same Letters In This Family?
No. BBC Bitesize lists b, h, k, m, n, p and r. The DfE writing framework lists r, n, m, h, p and b, and puts k with i, l, t and j. Programmes that start k with a straight line down sometimes treat it as a ladder letter.
| Letter | BBC Bitesize | DfE writing framework |
|---|---|---|
| k | One-armed robot | Grouped with i, l, t and j |
| All the others | One-armed robot | One group: r n m h p b |
What Comes Next After One-Armed Robot Letters?
Classes usually move to the curly caterpillar letters or the zig-zag monster letters. The other family is long ladder letters. When joins begin, the robot letters give a natural place for the diagonal join. See handwriting joins.
Questions About One-Armed Robot Letters
Why Are They Called One-Armed Robot Letters?
The name describes the shape: a straight body with one arm that goes up and over.
Is b a One-Armed Robot Letter?
Yes, in BBC Bitesize and in most schemes. It starts with the stem, not the bowl, which separates it from d.
Is There A Free One-Armed Robot Letters Worksheet?
Yes. Make one with the worksheet generator. It prints start dots, arrows and trace, fade and copy rows.
What Do They Look Like In Cursive?
Each keeps its start and adds joins and an exit stroke. Use the style chip on the tool to switch between print, pre-cursive and cursive. See cursive handwriting.