# PWR-094 — Body schema: learner worksheet Release: Revision 7T · Full Tutorial Edition Estimated time: Estimated 25 min reading and worksheet pass Difficulty: Intermediate Equipment: Common household or practice equipment — Stable chair and table, six large soft target cards and a start marker for the hand.; Ruler or grid mat, estimate sheet and optional tactile or verbal position cues.; Usual posture and mobility supports. Space: Room-scale practice space Automated structural checklist: 10 of 10 structural checks present Evidence quality/context: G2; Focused research depth Automated method-quality band: Comprehensive Method-rating basis: Structure coverage, instruction/check specificity, alternative distinctness, source troubleshooting, comparison depth and whether purpose/check fields are authored rather than derived. Editorial review: Pending manual editorial sign off ## Before you begin - [ ] I read the tutorial authority and stop conditions. - [ ] I have the required equipment/space or a declared accessible alternative. ## Canonical source context Body schema is an action-oriented representation of where body parts are relative to each other and the task. This low-risk lesson uses a seated reach to a benign target. The learner estimates direction and distance before moving, reaches normally with visual or tactile support allowed, compares the endpoint with the estimate and updates one error. It is not a neurological or body-image assessment. Target outcome: The learner makes six seated body-part-to-target estimates, separates direction from distance error and compares the complete error pattern with a delayed set of changed target positions. ### Authority and setup conditions - Choose a pain-free arm and comfortable table-height reach, or use the diagram route. - Place targets within normal supported range with no hot, sharp or breakable objects nearby. - Declare whether vision stays available; keep the same rule for scored trials. ### Required or supplied materials - Stable chair and table, six large soft target cards and a start marker for the hand. - Ruler or grid mat, estimate sheet and optional tactile or verbal position cues. - Usual posture and mobility supports. ## 1. Fix the body and task frame Mark the seated position, starting hand position, target plane and vision rule. Why: A stable reference makes estimates comparable. Success check: Chair, hand start and target area are marked. Accessible alternative: A supported, seated, reduced-range or slower version of “Mark the seated position, starting hand position, target plane and vision rule.” is equivalent only when it keeps the same trained or measured target, declared configuration and success check: “Chair, hand start and target area are marked.” If any of those change, record it as a related alternative rather than an equivalent repetition. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## 2. Calibrate the external scale On two unscored targets, view or feel the grid distance and say the matching centimetres or squares. Return to the marked hand start after each. Why: A shared scale prevents number unfamiliarity from being mistaken for body–target error. Success check: The learner correctly links near and far examples to the declared measurement units before scored estimates. Accessible alternative: Replace small or visual-only information with enlarged text, high-contrast display, spoken description or tactile/verbal cueing while preserving the same decision and success check. Use the diagram-only relation task when reaching is not appropriate. Alternative relationship: Target preserving when declared check is preserved Learner notes: ________________________________________________________________________________ Completed: [ ] ## 3. Estimate direction Before moving, point on a diagram or say whether the target is left, right, near, far, above or below the starting hand. Why: A pre-movement estimate exposes the current body–target relation. Success check: One direction category is committed before reach. Accessible alternative: Replace small or visual-only information with enlarged text, high-contrast display, spoken description or tactile/verbal cueing while preserving the same decision and success check. Use tactile target cards and a raised-line distance grid. Alternative relationship: Target preserving when declared check is preserved Learner notes: ________________________________________________________________________________ Completed: [ ] ## 4. Name the segment relation State where the hand is relative to the elbow and where the elbow is relative to the shoulder at the start, using ordinary words such as forward, bent or supported. Why: Body schema concerns linked body segments, not only the hand’s location in room space. Success check: The start record describes both hand-to-target and hand–elbow–shoulder relations without pain or forced posture. Accessible alternative: Complete “State where the hand is relative to the elbow and where the elbow is relative to the shoulder at the start, using ordinary words such as forward, bent or supported.” in shorter passes, or use keyboard input, dictation or a support person, while preserving this success check: “The start record describes both hand-to-target and hand–elbow–shoulder relations without pain or forced posture.” Give verbal left/right/near/far response options or use eye gaze. Alternative relationship: Target preserving when declared check is preserved Learner notes: ________________________________________________________________________________ Completed: [ ] ## 5. Estimate distance Mark the expected travel distance in centimetres or grid squares without moving the hand. Why: Distance and direction can fail differently. Success check: A numerical or ordinal distance estimate is saved. Accessible alternative: Complete “Mark the expected travel distance in centimetres or grid squares without moving the hand.” in shorter passes, or use keyboard input, dictation or a support person, while preserving this success check: “A numerical or ordinal distance estimate is saved.” Use the diagram-only relation task when reaching is not appropriate. Alternative relationship: Target preserving when declared check is preserved Learner notes: ________________________________________________________________________________ Completed: [ ] ## 6. Reach normally Move at a comfortable speed to the target using the declared supports. Stop at first contact; do not search around it. Why: One natural reach tests the estimate without added correction movements. Success check: The endpoint and any support are observable. Accessible alternative: A supported, seated, reduced-range or slower version of “Move at a comfortable speed to the target using the declared supports. Stop at first contact; do not search around it.” is equivalent only when it keeps the same trained or measured target, declared configuration and success check: “The endpoint and any support are observable.” If any of those change, record it as a related alternative rather than an equivalent repetition. Alternative relationship: Conditional equivalence requires target and configuration check Learner notes: ________________________________________________________________________________ Completed: [ ] ## 7. Compare and update Measure endpoint difference and classify the error as direction, distance or both. State one corrected relation before returning to start. Why: Naming the error updates the action map rather than merely repeating. Success check: Every trial has a measured discrepancy and one correction sentence. Accessible alternative: Replace small or visual-only information with enlarged text, high-contrast display, spoken description or tactile/verbal cueing while preserving the same decision and success check. Give verbal left/right/near/far response options or use eye gaze. Alternative relationship: Target preserving when declared check is preserved Learner notes: ________________________________________________________________________________ Completed: [ ] ## 8. Delay and change target After 48 hours, use six targets in new safe positions while preserving seat and start. Score categories without rereading old answers. Why: New positions test the relation method beyond memorised endpoints. Success check: Delayed novel-target results are separate. Accessible alternative: Complete the same research action — “After 48 hours, use six targets in new safe positions while preserving seat and start. Score categories without rereading old answers.” — using speech-to-text, text-to-speech, enlarged text, keyboard-only navigation, shorter work blocks or a support person. Preserve this declared check: “Delayed novel-target results are separate.” Do not convert the research task into capability practice. Alternative relationship: Target preserving when declared check is preserved Learner notes: ________________________________________________________________________________ Completed: [ ] ## Reflection What changed? ________________________________________________________________________________ What remains difficult? ________________________________________________________________________________ What will I repeat, adapt, ask for help with, or stop? ________________________________________________________________________________ --- Completion of this worksheet demonstrates tutorial participation only. It does not establish capability, qualification, safety clearance, diagnosis, treatment or independent validation.