Task 1
Measure the width of three safe household objects with a ruler. Make a table with object names and widths. State the smallest marked interval and show where zero was placed.
AC9S4I03 • Homework
Observing, Measuring and Recording worksheet
Use eight independent written and practical reasoning tasks. An adult checks the actual work.
Open practiceEight independent homework tasks
Use paper for your measurements, tables, drawings and explanations. An adult checks the actual work. Use teacher-provided sources where a device or field observation is unavailable.
Task 2
Draw a measuring-container scale from 0 to 200 mL marked every 20 mL. Draw water between 120 mL and 140 mL, closer to 140 mL. Record the volume to the nearest 20 mL and explain the rounding.
Task 3
Observe a safe plant for two days, or use two dated teacher-provided photographs. Record dates, two visible features and any measured change. Separate what you observed from what you think caused it.
Task 4
Write a four-step procedure for recording how long a safe tabletop toy moves. Include a starting event, stopping event, tool and unit, and a way to identify each trial.
Task 5
Make an animal-observation organiser with columns for evidence source, time and place, observed feature and possible identification. Fill one row from a teacher-selected animal image, video or call.
Task 6
Draw two length scales: one with 1 cm divisions and one with 1 mm divisions. Explain which could better distinguish two leaves whose lengths differ by only a few millimetres.
Task 7
A notebook says: trial A, 6 cm travelled; trial B, distance not measured; trial C, 0 cm because no movement occurred. Build a clear results table and explain why B and C need different entries.
Task 8
Plan a digital record for watching a seedling change over a week. Choose photos, video, audio or a suitable measuring tool; explain your choice and two checks needed to make the record useful.
Answers and adult review checks
Task 1
Answer: Actual widths vary; table headings identify width and unit, and the ruler interval is stated.
Inspect three measured records with units and an accurate zero-start diagram or explanation.
Task 2
Answer: The drawing has equal 20 mL spaces; the water is between 120 and 140, closer to 140, so record about 140 mL.
Inspect the constructed scale, endpoint position and approximate unit-bearing reading. No real water handling is required.
Task 3
Answer: Records depend on the plant. An observation is seen or measured; a suggested cause is identified as an interpretation.
Check actual dated records. Do not accept an invented measurement from a photograph without a usable scale.
Task 4
Answer: A suitable procedure sets the start/finish events, uses a timer in seconds, and records each labelled trial promptly.
Check that another learner could follow the timing procedure; no running, climbing or dangerous equipment is needed.
Task 5
Answer: The row attributes its source, records observable features and qualifies identification if the evidence is uncertain.
Inspect the actual organiser and source-based entry. No handling animals, scat or traps is required.
Task 6
Answer: The finer millimetre scale can show the small difference more clearly when used correctly. Both scales need equal intervals and units.
Inspect both labelled scale models and a correct explanation; do not claim smaller divisions remove all error.
Task 7
Answer: Use Distance (cm): A 6, B not recorded, C 0 with no movement noted. Missing data differ from an observed zero.
Inspect the complete table and the distinction between missing and observed data.
Task 8
Answer: Dated consistent photos plus ruler measurements can capture appearance and height; check plant identity, view, scale, units or tool setup.
Inspect a purpose-linked plan and two relevant checks. Do not require a personal device or online upload; a paper plan is sufficient.