Item number：FJ987

Product name："Xiao Ji"15

Packing：180PCS

Specification：About long270mmwide260mmhigh10mm

Weight：about200g

Color：混色彩色

是否使用电池：是

箱规：70*43*65

Preface：

Today, with an increasing emphasis on children's education，Enlightenment education has gradually become an important topic pursued and explored in the field of education today。More and more teachers and parents are beginning to pay attention to cultivating children's qualities from an early age，Help children develop good character and behavioral habits from the very beginning。Parent-child interactive handicrafts can enhance the quality of parent-child companionship，Improve parent-child relationships，The time we spend with our children，No mobile phone、ipad、Television，Only joy，Interaction and communication。 It can cultivate children's ability to solve problems by themselves when they encounter problems，Children should first see and experience the solution by themselves，Because this is how my parents and teachers solve problems while doing handicrafts。 It can develop children's imagination，In a child's world，Cars can fly in the sky、The sun can be green...... Play handicraftsDIYChildren's hands-on ability can be cultivated by using different tools，The child's little hands got sufficient exercise。Brush、Pigment、Scissors、Hot-melt gun、Glue.....，Dare to try any tool，It is also developing different skills to a certain extent。 A child's self-confidence lies in the process of handicrafts，Let's try every possible way together，Have experienced many failures，But it always succeeds，To a certain extent, it enhanced his self-confidence。 Cultivate children's concentration when they are exploring various tools and handicrafts，He is very focused，If there is no external disturbance，He can keep exploring。

Experimental purpose：Entertain through games，Let children acquire more knowledge and develop their own hands-on abilities。

Principle application：The aircraft glides by parallel propulsion，良good的手抛掷飞行轨迹应该是漂亮的弧线，Many people wrongly throw their planes at a large Angle into the air and then glide，In fact, it's very easy to lose speed，Instead, it doesn't fly far.。

Experimental cognition：The takeoff of an aircraft is based on Bernoulli's principle。The wing is made in an upward arc，A geometric shape that is flat or concave at the bottom，In this way, when the wing moves forward, the air flow rate above is faster than that below，According to Bernoulli's principles of fluid mechanics，The air below will exert a pressure on the air above，This is the lift of the wing，Lift up the plane，Fly in the air。

Hand-thrown aircraft also cannot do without the basic principles of aircraft，只是依靠手向前抛掷提供飞机推力

知识拓展：According to the law of conservation of energy：Energy will neither disappear，Nor will it create something out of nothing，It can only be transformed from one form to another。In low-speed flowing air，The only energies involved in the conversion are pressure energy and kinetic energy。A certain quality of air has a certain pressure，It can push objects to do work；The greater the pressure，The greater the pressure energy is；Flowing air has kinetic energy，The greater the flow rate，The greater the kinetic energy。

Knowledge extension：The flow rate of air only comes from the effect of the propeller carried by the engine on the air，Of course, analyzing energy from here is also balanced。

Warning：

All the accessories in this product are student experimental production equipment，Please ensure safety under the supervision and guidance of teachers and parents Use it all below！All products are prohibited from consumption！Not suitable for children under three years old，Do not press near the fire source。If used Please check whether the circuit is unobstructed before assembling the battery、Whether the accessories on the circuit are complete，Whether each contact is good or not good，On the battery+"Positive"、-Negative，组装过程中注意If usedGlue不要弄到眼睛和皮肤上。