How do I report son receival of $689.30 in interest income from redemption of US Savings Bonds?

son received $689.30 in interest income from redemption of US Savings Bonds.  does this need to be reported on my taxes.  He was a dependent child at 18 at time of redemption

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If the dependent child had unearned income of $1,050 or less and had no other type of income for the year, then the unearned income does not need to be reported on a tax return.