Save the Ice Cube!

Can a cover slow melting? Students build a cover and compare ice in covered and uncovered cups, observing at equal intervals. Includes an improve-and-retest engineering extension. Grades K–2. 13-page printable PDF. Includes teacher directions, supply checklist, two student recording levels, extension activity, science notes, vocabulary, exit ticket, teacher answer guidance, selected Texas TEKS connections, and terms of use. Allow about 35–40 minutes; extensions require additional time. Digital download; no physical item or slide deck. Single-teacher classroom license.