As an example of muscle-strengthening activities for children mention the following:

Games such as tug of war
Swing on the bars playground equipment
Gymnastics
Melanie Addington Scam
Climbing ropes or trees
Stomach exercises
Sports such as gymnastics, football, basketball and tennis

As an example of muscle-strengthening activities appropriate for most young people mention the following:

Stomach exercises
Exercises pressure
Gymnastics
Exercises with resistance bands sports machines, weights or hand weights
Rock Climbing
Sports such as football, basketball and tennis

On children and young people to participate in activities appropriate to their age and levels of sports

Any exercise can be considered as strengthening exercises for the bones? Lead to bone strengthening exercises influence or force applied to the bone

Which helps in the growth and strength?

As an example of bone strengthening activities appropriate for children mention the following:

Activities that require children to raise body weight or effort against resistance
Activities involving jumping and climbing, with the use of playground equipment and games
Games such as hopscotch
Jump rope
Walking
jogging
Sports such as gymnastics, football, basketball, tennis
Martial Arts