Remove the tank cover and check the water level after the fill valve has shut off. It should be about one inch below the opening of the overflow tube. If it is significantly lower than that, there may not be enough water in the tank to fill the bowl after a flush. Correct this by adjusting the float.
The average child can do this during the second half of this year. Between 24-36 months, children are typically able to work simple insert puzzles (e.g., completes a three-piece simple puzzle where pieces are whole objects). Also, children can remove a part from a toy (e.g., a wheel) and replace it.
Over time, puzzles grew into an activity that people of all ages enjoy completing by themselves, with friends or with their children. For younger children, around the age of 1 and 2, puzzles are usually made of wood and have large handles for small children to easily hold. Once the puzzle piece is removed from the board, there is typically a colored picture on the board, which makes it easier for children to match the pieces and place them correctly in the right location.