Westminister Inc. &ndash; Newton&rsquo;s Cradle Balancing Balls Science in Motion Wood Grain ENTERTAINMENT - The back and forth motion is a soothing experience you'll enjoy day after day, learn about the conservation of momentum and energy PERFECT GIFT FOR ANYONE  The perfect gift for family members, friends, loved ones, children ect. Its unique features include a beautiful wood grain that measure up to the high-quality materials used to demonstrate Newtons Law of Conservation DECORATION  Place in your house, office, or classroom to keep those entertained for educational purposes. STRESS RELIEF  A perfect gift for the stressed-out college student or anyone to provide psychological relief and relaxation. SCIENCE IN ACTION  With our item science will be part of your life every day. The perfect education gadget that you and those that see it will love!