¡Hola! My name is Isabel. I was born in Mexico. If you boarded a train that took you back through time to ancient Mexico, you would see a beautiful shiny city called Mexico-Tenochtitlan.
In the centre of the city there were two tall pyramids dedicated to gods. The busiest place in the city was the market. There you could buy crunchy chapulines (grasshoppers), slobbery nopales (cacti), sweet tunas (prickly pears) and refreshing lemon water.
Would you like to try them? To pay for your purchase, you would need cocoa beans which were used for money.
The ancient Mexicans were great mathematicians. They invented zero before anybody else! Look at how they wrote numbers in my picture.
Can you use those numbers to write how many prickly pears, grasshoppers and cocoa beans there are?