Toddler Mania Challenge Sims 4 by EQ

Reward Traits for Child Sims who age up from Toddlers. Specific skill requirements are needed for these traits to be rewarded to children.
Happy Toddler (Reward Trait – Child) – This Sim got a good jump on skills as a toddler. This helps them gain all skills a bit faster. (From having all Level 3 Toddler Skills when aging up to Child)
Top-Notch Toddler (Reward Trait – Child) – This Sim got such a strong jump on skills as a toddler, they improve all other skills extra fast. (From having all Level 5 Toddler Skills when aging up to Child)
Source: The Sims 4: Toddler Patch Overview