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Grade 1. Many of the items in the Light and Sound Waves 2nd Edition 1-Use Unit Kit (item #514221) may be reused. This 1-use refurbishment set includes the items consumed during the teaching of the unit that need to be replenished. Set includes enough consumable materials to teach the unit 1 more time to a class of up to 24 students.
If for any reason you are not satisfied with this item, it is eligible for a return, exchange, refund, or credit up to 180 days from date of purchase. Restrictions may apply. Returns & Exchanges Policy.