if($sql->rowCount() > 0){

                $array = $sql->fetchAll();

                foreach($array as $aulaChave => $aula){
                    if($aula['tipo'] == 'video'){
                        $sql = "SELECT nome FROM videos WHERE id_aula = '" . ($aula['id']) . "'";
                        $sql = $this->db->query($sql)->fetch();
                        $array[$aulaChave]['nome'] = $sql['nome'];
                        $sql = "SELECT * FROM historico WHERE id_aluno = '" . $_SESSION['lgaluno'] . "' and id_aula = '" . $aula['id'] . "'";
                        $sql = $this->db->query($sql);

                        if($sql->rowCount() > 0){
                            $array[$aulaChave]['assistido'] = '1';
                        }else{
                            $array[$aulaChave]['assistido'] = '0';
                        }
                    }else if($aula['tipo'] == 'questionario'){
                        $array[$aulaChave]['nome'] = "Questionário";
                        $sql = "SELECT * FROM resposta_questionario WHERE id_aluno = '" . $_SESSION['lgaluno'] . "' and id_aula = '" . $aula['id'] . "'";
                        $sql = $this->db->query($sql);

                        if($sql->rowCount() > 0){
                            $array[$aulaChave]['respondido'] = '1';
                        }else{
                            $array[$aulaChave]['respondido'] = '0';
                        }
                    }
                }

            }