This curriculum is for the parent or caregiver who already knows a lot of Spanish and wants to provide some additional structure. I am highlighting the first grade Spanish curriculum because that is what I am using with my daughter as a homeschool Spanish curriculum but it does go through grade 6.
For the first grade level it has a Spanish reading book that you can easily do all
My daughter did a couple activities in the activity book, Español: Primer Grado Actividades and Español: Primer Grado Recortable , which correspond with the Spanish reading book.
You at least need the above two books in order to make this Spanish curriculum work. If you don't mind reading the stories that correspond to the activity books online then you don't need the lectura book. For the first grade books I really don't think it is necessary to have the reading book because you can listen to each story in Spanish online and the stories are fairly short. However, it looks like the 2nd through 6th grade Spanish reading books do not have the audio and if you are reading it online the print is kind of small. I like having the reading book so that my daughter and I can sit and read it anywhere. Some of these books are being sold fairly cheap by third party sellers on Amazon. I think the shipping costs more than the price of the book.
Here's what my daughter and I did using the 3 first grade books I have mentioned. We first read the story Saltan y Saltan from the first grade Spanish reading book. If you want to check it out go here. (Go here to see all the reading selections from this book.) Then we did the corresponding activity from the Actividades book. My daughter got to cut out pictures of the dwarfs from the story (found in the recortable book), and then paste the pictures on a page in the Actividades book. Before doing all this we talked about each emotion/ feeling depicted by each dwarf. I then had her find the word that matched and paste the picture on the correct spot. Then she wrote each Spanish word under the picture while I sounded it out for her in Spanish. She is in the middle of working on first grade hooked on phonics so while some of the sounds are a little different than she's used to for English it really was no problem for her.
I have 3 other books I purchased as well that go along with this curriculum so stay tuned for when I review them.