adhd
analysis
attention
behavior
behavioral
boy
chemical
child
childhood
classroom
complete
counselor
deficit
difficult
difficulties
disorder
education
experiment
focus
homeschooling
hyperactivity
individual
kid
learning
lesson
little boy
little kid
microscope
off
pays
pedagogue
perseverance
private
problem
psychologist
school
school elements
school kid
school teacher
science
small boy
small kid
symptoms
tasks
teacher
test
therapist
therapy
tubes
tutor
定額
Attention deficit hyperactivity disorder. Teacher child test tubes. School lesson. Chemical experiment. Difficult focus and complete school tasks. Symptoms of ADHD at school. Perseverance pays offの素材 [FY310158452843]
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