4 | Perscrutar e declerar fenomens da la natira viva e morta
2. Las scolaras ed ils scolars san cumparegliar e perscrutar fenomens acustics.
3. Las scolaras ed ils scolars san identifitgar e perscrutar fenomens optics.
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2. Las scolaras ed ils scolars san cumparegliar e perscrutar fenomens acustics.
3. Las scolaras ed ils scolars san identifitgar e perscrutar fenomens optics.