đ° Master simple interest with this engaging Valentine's-themed digital mystery riddle activity! 12 self-checking questions cover finding simple interest, principal, time, and total amount. As students answer correctly, a logic puzzle appearsâthe perfect brain break to reinforce the math! Ideal for 6th advanced and 7th grade TEKS 7.4 practice. đ° đš WHAT MAKES THIS PRODUCT SPECIAL: ⨠12 RIGOROUS SELF-CHECKING QUESTIONS - Covers all aspects of simple interest (I = Prt) with student-frien