# Read a practice mark The supplied straight scale labels 0,10,20,30,40 mL and marks 20. Read the amount and unit. Practice straight scale: 0, 10, 20, 30, 40 mL, in equal steps. The marker is exactly at 20 mL. Tell a helper or point; no purchased measuring container is needed. Try one small explanation, then stop or return later. Tell or show it in your usual way: words, drawing, pointing, signing, typing, dictation or your communication device. Work quietly or privately, pause, ask for a helper, or return later. Sharing and recording are optional.
Grown-up help **Useful response:** The paper mark is 20 mL. Reading it is practice, not proof of actual scaled-instrument use. No equipment purchase, water handling, trip or private household data is required. Keep this ordinary practice separate from new assessment sources. [Full lesson](../lessons/day-36.html) · [Checked fact/source limits](../references/PRIMARY-READING.html) Modified from [Year 4 Science alignment](https://www.qcaa.qld.edu.au/downloads/aciqv9/science/curriculum/ac9_science_yr4_as_cd_alignment.pdf), [standard elaborations](https://www.qcaa.qld.edu.au/downloads/aciqv9/science/assessment/ac9_science_se_yr4.pdf) and [Years 3–4 techniques and conditions](https://www.qcaa.qld.edu.au/downloads/aciqv9/science/assessment/ac9_science_tc_yr3-4.pdf), © State of Queensland ([QCAA](https://www.qcaa.qld.edu.au/copyright)) 2023, covered [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) with exceptions. Our task criteria are original; these are not official A–E bands. Actual folio and on-balance professional judgment remain necessary.