Use stable object names as well as ordinal labels. Then a direction change can change an object's position without pretending the object itself changed.
One original six-parcel sequence
Original teaching sequence, not a copy of a photographed worksheet: the parcels are labeled Acorn, Boat, Cloud, Drum, Egg, and Flag. Their fixed physical order from left to right is:
Acorn → Boat → Cloud → Drum → Egg → Flag
Give every original parcel drawing a text label. The sequence above is the full text alternative; learners do not need to recognize a small symbol to know its identity.
| Parcel | Position from the left | Position from the right |
|---|---|---|
| Acorn | first / 1st | sixth / 6th |
| Boat | second / 2nd | fifth / 5th |
| Cloud | third / 3rd | fourth / 4th |
| Drum | fourth / 4th | third / 3rd |
| Egg | fifth / 5th | second / 2nd |
| Flag | sixth / 6th | first / 1st |
From the left, choose the third parcel: Cloud. From the right, choose the third parcel: Drum. Keep the physical sequence fixed and reverse the marked start arrow. Reversing both the sequence and the counting direction would obscure what the exercise is testing.
Distinguish “six parcels” from “the sixth parcel”
The group contains six parcels in either direction. That is the count. “Sixth” names one position relative to the chosen start. From the left it is Flag; from the right it is Acorn.
Ask the learner to explain the path: “Starting at Acorn, I count Acorn first, Boat second, and Cloud third.” A prompt for the right-hand start needs a different explanation beginning with Flag. Feedback should name that actual sequence instead of merely displaying a correct-answer color.
Plan interaction around the origin
Use a direction selector, an ordinal prompt, and six labeled selection controls. A keyboard user should be able to select a parcel without dragging it. Mark the start and write count left to right or count right to left in text.
Changing direction should clear the prior response and explain the new key only after the learner answers. Reset clears the answer and explanation. Do not reorder the objects as a side effect. Keep a selected but unanswered prompt distinct from an incorrect answer; no timed score is needed for this task.
Copy a direction-aware exercise brief
Create an original ordinal-position worksheet in US English.
Learner context: [enter or TO CONFIRM]
Fixed object sequence with stable IDs/names: [paste]
Allowed counting origins/directions: [enter]
Ordinal words and numeral labels to practice: [paste]
Show the start and direction explicitly. Preserve object identities and
physical order when changing direction. Provide a key for each origin;
distinguish the number of objects from an object's ordinal position. Explain
answers by naming the counted sequence. Use original drawings with a complete
text equivalent; do not copy a source worksheet's pictures or assume its key.
Return prompts, answers, and feedback as text. If requested, provide HTML
local practice with keyboard-operable choices, direction selection and reset.
Direction changes clear stale answers/feedback. Empty answers stay unanswered.
No drag-only task, fake audio, score collection, or claimed assessment result.
Have a teacher check “third” and “sixth” from both ends before giving out the sheet. An HTML reading copy can be saved and displayed in NOS while you compare the start arrow with the key. Keep the actual pupil assessment and any required paper worksheet in the school's normal workflow; use this exercise to make the counting origin explicit.