Motor skills for 4-year-olds. 1  jumps up and touches line 3 inches above standing reach. 2  hops forward on one foot. 3  uses an overhand toss to hit a target from 5 feet.  throws small ball underhand 10 1  feet. can use a fork and a spoon.  pedals a 1  tricycle. able to handle going up and down stairs fairly well without  help.
Definition of Indirect Measurement. Indirect measurement is a technique that uses proportions to find a measurement when direct measurement is not possible. The length of a pole in a picture is given as 4 inches. The scale of the picture is given to be 1 inch : 13 inches. By setting up a proportion, the length n of the actual pole can be found.
NATO defines indirect fire as Fire delivered at a target which cannot be seen by the aimer.. The implication is that azimuth and/or elevation 'aiming' is done using instrumental methods. Hence indirect fire means applying 'firing data' to azimuth and elevation sights and laying these sights. Indirect fire can be used when the target is visible from the firing position. However, it is mostly used when the target is at longer range and invisible to the firer due to the terrain. Longer range uses a higher trajectory and in theory maximum range is achieved with an elevation angle of 45 degrees.