Answer:
material that current can pass through easily
 
        
             
        
        
        
Answer:
practice effects
Explanation:
Based on the information provided within the question with regards to Leigh's experiment it can be said that her biggest concern should be practice effects. This term refers to the effects or changes that can occur when repeating the same experiment various times with the same participants. Which is what Leigh is doing, as she is only changing one variable but repeating the same experiment.
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Answer:
<em>Sensorimotor stage of development</em>
Explanation:
 Piaget's theory of cognitive development has four stages of development and sensorimotor is the first stage of child development. At sensorimotor stage the child learns by assimilation and accommodation, he/she tries to know the environment by using the senses. This period lasts for the first two years of the child's birth.
Damien puts those things in the mouth just to have a feel of them by sucking them. When he sees the toy train he plays with it but when he did not sense it he loses interest. <em>Damien behaviour illustrates a child in the sensorimotor stage of development</em>.
 
        
             
        
        
        
Answer: 15 Most Common Event Planning Challenges & Their Solutions. Understaffing an event is a common event problem. Overspending on the event is a big event challenge. Not prioritizing networking activities is an event challenge. Forgetting to track schedule or budget changes it an avoidable event problem
Explanation: