Simple Past: irregular verbs.

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In this unit, in 2nd ESO, we are starting to learn about the past. One of the most difficult things about the past is the endless list of irregular verbs that we have to learn becuase they are the most common verbs (you can check this at the Red Words game at MacMillan Dictionary Blog). In order to learn them, we are going to try and make it easier for our brains to learn them by splitting them into different groups, as you can see in this great mindmap.
Irregular verbs are irregular because they do not follow a rule, as the adding of the suffix -ed at the end of the verb as explained in this other post.

We are following the classification of the mindmap above to make different groups to learn these verbs, we start with one word irregular verbs, that is, the infinitive, simple past and past participle are the same:

Spanish	Infinitive	Simple past	Past participle
Costar	Cost	Cost	Cost
Cortar	Cut	Cut	Cut
Golpear	Hit	Hit	Hit
Herir	Hurt	Hurt	Hurt
Dejar, permitir	Let	Let	Let
Poner	Put	Put	Put
Cerrar	Shut	Shut	Shut

The next, the simple past and past participle are the same and end in a -t:

Spanish	Infinitive	Simple past	Past participle
Dormir	Sleep	Slept	Slept
Guardar, mantener	Keep	Kept	Kept
Soñar	Dream	Dreamt	Dreamt
Deletrear	Spell	Spelt	Spelt
Sentarse	Sit	Sat	Sat
Obtener	Get	Got	Got
Disparar	Shoot	Shot
Perder	Lose	Lost	lost
Construir	Build	Built	Built
Gastar	Spend	Spent	Spent
Enviar	Send	Sent	Sent
Prestar	Lend	Lent	Lent

The simple past and past participle are the same and end in a -d:

Spanish	Infinitive	Simple past	Past participle
Mantener	Hold	Held	Held
Oir	Hear	Heard	Heard
Hacer,fabricar	Make	Made	Made
Tener,tomar	Have	Had	Had
Encontrar	Find	Found	Found
Contar	Tell	Told	Told
Vender	Sell	Sold	Sold
Decir	Say	Said	Said
Estar de pie	Stand	Stood	Stood
Pagar	Pay	Paid	Paid
Leer	Read	Read	Read

2 words, infinitive and past participle are the same:

Spanish	Infinitive	Simple past	Past participle
Venir	Come	Came	Come
Correr	Run	Ran	Run
Llegar a ser	Become	Became	Become

 2 words, miscellaneous:

Spanish	Infinitive	Simple past	Past participle
Ganar	Win	Won	Won
Sangrar	Bleed	Bled	Bled
Alimentar	Feed	Fed	Fed
Dejar,abandonar	Leave	Left	left

2 words, ending in -ght:

Spanish	Infinitive	Simple past	Past participle
Traer	Bring	Brought	Brought
Comprar	Buy	Bought	Bought
Coger	Catch	Caught	Caught
Enseñar	Teach	Taught	Taught
Luchar	Fight	Fought	Fought
Pensar	Think	Thought	thought

Well, we have work to do now, are you ready?