Problem solving

Books

• 
  The Great Gizmo Derby

  An inventor hunts a soapbox wheel thief

  Ages 6–9 · 7 chapters · 29 min

• 
  The Night the Scarecrow Walked

  Two young detectives follow a wandering scarecrow

  Ages 6–9 · 6 chapters · 37 min

• 
  The Great Flood Mystery

  Young otters break a water main under school

  Ages 5–7 · 9 chapters · 53 min

• 
  The Winter Storm Patrol

  Junior otter inspectors face a winter storm

  Ages 5–7 · 8 chapters · 36 min