When Jesus said in John 8:12, “I am the light of the world,” He was expressing a great truth. We can only see the path to God because He shines the way. These Bible Sunday school lessons use science experiments to teach the message.

Light is a form of energy. It travels in rays, and the reason you see objects, regardless of their color, is that light reflects off of them.

Sunday School Lessons Experiment: “Water, Light, & Optical Illusions”

APPLICABLE SCRIPTURES:
Matthew 19:30 But many who are the greatest now will be least important then, and those who seem least important now will be the greatest then.

MATERIALS:
– 8 crayons, different colors
– One clear drinking glass with a wide mouth
– Tap water

STEPS:
1. Arrange the crayons with the tips pointed down in the empty glass and their middles resting on the side of the glass
2. Spread them out evenly so there is equal space between them
Do the crayons look straight or bent through the glass?
3. Slowly, pour tap water into the glass, keeping the crayons still
4. Stop when the glass is half full so the crayons don’t float off
Do the crayons look straight or bent through the water?

EXPLANATION:
Light travels through both air and water in rays.

The speed of light is very swift – so swift you could never follow it with your eye. However it slows down in water. The slowing makes the rays change direction slightly, and that’s what gives the crayons the look of being bent.  It is what we call an “optical illusion,” something that looks different than what it actually is.

SUNDAY SCHOOL LESSONS DISCUSSION – “UNDERSTANDING GOD”:
God is very anxious to show us that in this world, things are often not as they appear.

What works with crayons and water also is true with friendships and groups of people. Some people like to be admired for their clothes, possessions and looks. But often the very best of people are nobody we’d notice from what’s on the outside.

Don’t fall for the optical illusion of popularity. Jesus said about the kingdom of heaven in Matthew 19:30, “Many who are the greatest now will be least important then, and those who seem least important now will be the greatest then.” Instead of looking to be admired, look to serve others and be nice. You’ll be a whole lot more prepared for all eternity with Jesus if you “see things straight” down here.

 

Need more Sunday School lessons and ideas for your class? Check out this free bible game. A be sure to follow me on Twitter, where I will share more free Sunday school lessons!