Description

Place cards

Un couvercle à charnière maintient ce bac solidement fermé

ce qui les rend idéales pour envoyer des cartes

Sans danger avec le javellisant (jusquâ€™à 200 lavages

Cordon de 15 pi et trois fiches incluses

Thames & Kosmos Molecule Beads STEM Experiment Kit VariesBy:Default Place cardsMake plump and squishy polymer gel beads to demonstrate the molecular structure of plastics. Form the gelatinous globules by dripping sodium alginate into a solution containing calcium ions. Learn how massive chains of polymers make these fun squishy orbs possible.

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