King of maths

On the 24.10.18 I got a Matific certificate and I got a Matific galaxy card too. I went to the Matific galaxy web site and it said 1 year was $19.99! I was getting sad. When I got back to my home, I checked again and my mum said "write the words on the coupon"and I typed the words on the  coupon and it said  I  could use it for free then I was so happy.