[br][b]Show answer app:[/b][br]a=RandomBetween(1, 3)[br]b=RandomBetween(1, 3)[br]c=a+b[br]Use Text tool with objects a and b : a+b=[br]Use Text tool with object: c[br]Use Tool Box to show Text c[br]Create a button with script: [br]UpdateConstruction()[br]d=false[br][b][s]To be able to type the answer:[/s][/b][br]add following:[br]t=””[br]connect inputbox to t[br]if(t==Text(c),"right","wrong")  which creates a text, add condition to show object on it to:    [br]To the “new” button add[br]t<>""[br][br][b]Click on the right answer app:[/b][br]Points on x-axis A(1,0),B(2,0),C(3,0)[br]a=RandomBetween(1, 3)[br]b=0[br]c=if(a==b,true,false)[br]Behind point A script on click:[br]b=1[br]If(c==true,SetColour(A,"green"))[br]If(c==false,SetColour(A,"red"))[br][br]Behind point B script on click:[br]b=2[br]If(c==true,SetColour(B,"green"))[br]If(c==false,SetColour(B,"red"))[br][br]Behind point C script on click:[br]b=1[br]If(c==true,SetColour(C,"green"))[br]If(c==false,SetColour(C,"red"))[br][br]Button with script on clickcalled NEW:[br]UpdateConstruction[br]b=0[br]SetColour(A, “blue”)[br]SetColour(B, “blue”)[br]SetColour(C, “blue”)[br][br]Text Tool: a as an object[br][br][b]Drag and drop app:[/b][br]create a circle c[br]create a point C[br]a= randombetween(1,10)[br]b=if(Mod(a,2)==0,true)[br]create a text  with object a which position you set to C[br]On advanced for the text add to[br]red: C ∈ c∧b==false[br]green: C ∈ c∧b==true[br]Button calles new with script[br]Updateconstruction()[br]C=(coordinates somewhere outside cicle)[br][br][br]