Can the Nintendo DS or DS Lite Play Game Boy Games?

The first DS flash card I got was called the GBA Movie Player This fitted into the DS's GBA cartridge slot It had to go here as it

Game Boy Advance SP Game Gear GameSlot Kit SKU GG0043 £

ds gameboy slot No The original DSDS Lite have the GBA slots, as do the GBA, GBA SP, and the Game Boy Player The DSiDSi XLDSi LL do NOT have

ds99 slot Why did the #nintendo DS have two slots on it? Watch to find out!!! A big thank you to everyone